Tag Archive | How can we help bees and butterflies?

Patches For Pollinators: Less Grass To Mow

2022

 

 

patches for pollinators

 

 

Patches For Pollinators

 

In this article, I’ll describe how new garden spaces and “Patches for Pollinators” have decreased mowing time, while providing nectar and pollen for pollinators and seeds for songbirds. Also included is information about several insects found in the gardens this summer.

A common theme running through The Farm In My Yard is my goal of replacing much of the lawn with layered gardens, including trees, shrubs, perennials, bulbs, and annuals. Flowers and more natural surroundings attract bees and butterflies, toads and birds.

All the rest of the animal kingdom are showing up as well. Mice, moles, and voles…snakes and rabbits…foxes and deer. Lots of praying mantises, five-lined skinks, ladybugs, fireflies, and many insects I’ve never seen before. Occasionally, a cat sits patiently under the bird feeder until he’s shooed off. And some pests, too, such as…

 

…Japanese Beetles

lettuce-leaf basil, Japanese beetles

Lettuce-leaf basil ‘Tuscany’, with Japanese beetles.

Japanese beetles (Popillia japonica), accidentally imported into the U.S., were first spotted in New Jersey in 1916. They’re present here (northern NC) in enormous numbers this year and demonstrate a particular fondness for my lettuce-leaf basil, marigolds, blueberries, and raspberries. But they will feed on hundreds of species, including linden, cherry, plum, birch, rose, grape, and hollyhock.

To prevent “skeletonized” foliage on farmers’-market-bound basil, I cover the plants with an old sheer curtain to exclude the beetles. Future plans include growing berries and other susceptible plants under insect screening, with allowances made for bumble bees to pollinate the flowers.

Although a few birds eat them, the damage these beetles do to the landscape and to my inventory far outweighs their benefit.

Japanese Beetle Life Cycle

With regular rainstorms, soil stays softer, allowing female beetles to repeatedly lay eggs deeper into the soil in July and August. There, the eggs and young grubs are not stressed by hot, dry soil. White C-shaped grubs feed voraciously on healthy roots (particularly those of lawn grasses), and, in autumn, descend deeper into the ground, protected from severe cold.

In spring, grubs rise closer to the surface to continue feeding. In late spring, well-fed larvae pupate in the ground, and adult beetles emerge in early summer. Moist soil—from rain or irrigation—contributes to this beetle’s success. Where the ground is soft and moist in summer and fall, you can count on large populations of Japanese beetles the following year.

Incidentally, chewed plant tissues emit certain scents which attract even more beetles. That’s why we find them congregating in large numbers in the tops of blueberry bushes or in rose flowers.

Applying Milky Spore powder, a bacterium, to the property (grass and gardens) in early autumn kills grubs feeding on roots. This remedy isn’t 100% effective because beetles fly in from quite a distance—miles, in fact. At the very least, there will be fewer grubs devouring roots in your landscape. If you can encourage the entire neighborhood to apply Milky Spore, everyone will benefit. Except Japanese beetles. Moles, by the way, feed on these grubs. Plenty of those around, as well.

Other than that, I’m not fertilizing the lawn, applying any chemicals, or reseeding. In the future, I might work on a limited amount of presentable lawn close to the house. But for now, since the lawn comprises about 75% weeds and undesirable grasses, I’m just cutting it. Besides, much of that ground will be turned over, amended, and planted with something other than grass.

 

 

Less Grass To Mow With Patches For Pollinators

 

New Gardens

When I bought the house in late 2021, the lawn covered about half the property, taking 5½-6 hours to cut with a walk-behind self-propelled mulching mower. Part of the lawn’s square footage has been taken up by the many plants installed last fall and winter. They’re the beginnings of new gardens, which will expand as I propagate perennials, seed the annuals, and plant drifts of new shrubs. Space taken up by low-maintenance gardens will decrease the time required to cut grass.

 

foxglove

Foxglove.

 

Several white oaks (Quercus alba) tower over the property, providing a high canopy for proposed shady gardens underneath. About 200 tiny foxgloves just began germinating from seeds sown in a pot. Some will be sold at the market, and many will be planted in morning sun or under the trees’ dappled shade.

Foxglove (Digitalis purpurea) is toxic to most warm-blooded animals, including rabbits and deer. (It is a source of pharmaceuticals, but only under a doctor’s care.) The greatest risk to these plants is from dead twigs falling from the old oak trees.

Foxglove is a biennial, and, if happy, drops seeds at the end of its growth cycle for a self-sustaining colony of plants with stately flower spikes, from cream and pink, and rose to purple. It blooms in spring to early summer, then sheds seeds and dies. After those tiny seeds germinate in summer, young plants will remain dormant in winter. They’ll bloom the following spring, thus repeating the cycle. Insects and hummingbirds gain sustenance from the flowers.

From Crape Myrtle To Virginia Sweetspire

 

patches for pollinators, garden bed with flowers and edible greens

‘Red Russian’ kale, komatsuna, and tiny itea, foreground, plus kales, collards, cosmos, and crape myrtle, toward the back, after planting and mulching.

 

Growing plants from seed is one way to economically fill a large garden bed. I started a new garden last fall, close to the street, where I planted a pink crape myrtle (Lagerstroemia indica) and 2 tiny Virginia sweetspires (Itea virginica ‘Henry’s Garnet’) brought from Charlotte.

Early this year, I turned over the ground to a depth of 10″ between the shrubs and beyond, and added leaf mold and black topsoil from the woods. Also incorporated into the soil was a generous portion of chopped oak leaves stored in trash bags since the previous autumn.

All this loosening of the soil and the additional materials created a raised bed about 22′ long and 6-8′ wide. It’s an irregular shape with a curved outline. And, naturally, it will be enlarged over the years.

purslane, pink and white flowers

Purslane and ‘Red Russian’ kale.

This garden is where I’d planned to have a mass of large light pink cosmos. So, I grew ‘Cupcakes Blush’ from seed and planted about 40 of them in 2 groups. Between them, I added dozens of blue-gray ‘Lacinato’ kale, the similar but more purple ‘Dazzling Blue’ dinosaur kale, and the frilly ‘Red Russian’ kale. Behind the crape myrtle, I planted 10 collards, with rounded light grayish-green leaves. On the end, near the itea, I added a few clumps of komatsuna ‘Green Giant’, with broadly rounded dark green leaves. These plants complement each other in both color and form, and all the greens (kale, collards, komatsuna) are edible.

I picked up a purslane at a local roadside stand. It had solid deep pink flowers on a low, spreading plant. But the heat, apparently, turned the new flowers pink and white striped. So, I stuck that into the “pink garden”, and put a few cuttings near it, which are now growing.

Not In the Pink

I won’t grow ‘Cupcakes Blush’ cosmos again because it took too long to grow and fill out. It didn’t have the number of flowers hyped in the catalog, and fewer than half were light pink!

The fast-growing greens are winners in both vegetable and flower gardens. They’ll look even better when paired with blooming violas in fall and winter. The fact that they survived at all during this overheated summer is a marvel. Adding ‘Scarlet Frills’ mustard greens (edible) will echo the burgundy fall color of the iteas and crape myrtle.

 

Marigolds.

 

***Update***: Close to 2½-3 months of frost-free weather is just too long to put up with plants that aren’t delivering. So, all the “pink” cosmos were taken out in early August, and replaced with dwarf marigolds (photo, above), dwarf ‘Cosmic Orange’ cosmos, and coppery-leaved coleus. Much better. But the pink purslane will have to move. The crape myrtle bloomed very lightly this first season in the garden. 8/6/2022

 

Vegetable Gardens

This property includes a sizable fenced garden, partially shaded by the oaks on the east side of the house. As the sun’s arc shifts through the year, the garden receives more or less sun than it did the previous month.

Last autumn, I stuffed oak leaves into large trash bags, and stored them next to the foundation over the winter. In early February, I incorporated a few of those bags of leaves into the top 12″ of this garden’s soil, along with aged cow manure. After planting the greens, a thick layer of oak leaves was applied as a mulch, keeping soil moist, cooler, and weed-free. By late spring, the greatly improved soil was well-populated by earthworms, and the organic matter will continue to break down for months to come.

I’ll dig and amend more of this garden and add cool season greens, such as spinach, Swiss chard, green onions, and leeks. And peas, of course—the edible-podded ‘Sugar Snap’ and a variety of snow pea called ‘Oregon Giant’. It’ll receive more hours of sun after the trees defoliate. The brassicas (arugula, broccoli, miniature broccoli ‘Happy Rich’, Brussels sprouts, cabbage, cauliflower, collards, kale, mustard greens, pac choi, and others), or cruciferous crops, figure prominently in autumn and winter gardens and in the kitchen.

Hostas brought from Maryland a decade ago grow plump in the composted soil on the shadiest end of the garden. I’ll add more varieties of hostas here, safe from deer, until it’s time to pot them up for the market.

Miniature Broccoli ‘Happy Rich’

 

mini broccoli 'Happy Rich'

Miniature broccoli ‘Happy Rich’ planted 14-16″ apart, with peas behind them.

 

Brassicas (plants in the Brassicaceae family) appreciate moist, well-composted soil, generous portions of aged cow manure, and neutral pH. Here in USDA zone 7, many types of greens can grow in cold weather, even through the winter. I plant several kinds of brassicas every fall. During severely cold periods, a loose covering of clear plastic keeps the foliage in good condition.

Late last winter and in spring, I set out about 30 plants of miniature broccoli ‘Happy Rich’ on the north end of the garden, farthest from the oaks. While the trees were leafless, the plants grew in full sun. Now, in summer, these brassicas enjoy a couple of hours of mid-day shade from the hot sun.

This is one of my all-time favorite vegetables. Maybe even the favorite. I eat this versatile broccoli a few times a week, sell some at the Elkin Farmers’ Market, and donate a bunch when the market hosts cooking demonstrations. Great sweet flavor, and super healthy!

(***Update***: These same plants produced small harvests into mid-November. Then, with cooler weather, leaves grew larger. Unusually cold fall weather—up to 20 degrees colder than average—has caused them to decline earlier than expected. However, after the oaks dropped their leaves, the broccoli grew more vigorously, almost until Christmas, 2022. That’s why ‘Happy Rich’ is my favorite vegetable—9 months of harvests!)

‘Happy Rich’ and Insects

 

harlequin bugs on cabbage

Harlequin bugs on cabbage.

 

‘Happy Rich’ branches out after each cut, producing more stems, leaves, and small heads to harvest. Four species of caterpillars (from 3 species of moths and 1 butterfly) prove quite troublesome all season long, even beyond the first frosts. To prevent them from ruining the brassicas, I spray every 7-10 days with Bt (Bacillus thuringiensis). This isn’t a chemical, but a naturally occurring bacterium that kills larvae of moths and butterflies.

Bright orange and black harlequin bugs (photo, above) also feed on brassicas, spotting and distorting the heads and leaves. I squish them when I see them.

 

patches for pollinators, bumble bee on broccoli flowers

Broccoli ‘Arcadia’ and a bumble bee in spring.

 

As the plants finish up their last harvests now and in spring, some of the stems will bloom. Beneficial insects, especially bumble bees, honey bees, sweat bees, and tiny braconid wasps, collect nectar and pollen from the flowers. Heading broccoli has yellow flowers, but ‘Happy Rich’ has pure white flowers on stems up to 5′ tall.

Tomatoes

After warm weather had settled into the area, I planted several tomatoes and peppers among the mini broccoli plants.

 

tomatoes protected from deer

A small garden for cherry tomatoes.

 

Another section, north of the garden, gets sunlight longer into the season. There, I secured posts and strung deer netting between them (photo, above). It’s a narrow space, so deer won’t jump into it. This small area has a few cherry tomatoes, which can lean against the stronger existing fence, where edible-podded peas grew from late winter to early summer. You can see the pea vines growing through the fence.

Tobacco Hornworms

Tomato plant denuded by tobacco hornworm.

If one of your tomato plants seems a lot less leafy than it did yesterday, it might have a tobacco hornworm (slash markings) or a tomato hornworm (V-shaped markings). This very hungry caterpillar is the larval stage of a hawkmoth. A few weeks after a ‘German Johnson’ tomato went into the garden, it suddenly lost all its foliage. I’ve seen this before and knew to search for a 4″-long green caterpillar.

Several hornworms were found munching on the tomatoes this season. Most were carrying the pupae of a parasitic wasp and had stopped feeding. These pupae look like small grains of white rice. A female wasp lays eggs on or in the caterpillar. The eggs hatch into tiny larvae, which eat the inner tissues of the caterpillar, weakening or killing their host. Those should be left alone.

The few that hadn’t been parasitized lived out their lives on old tomato plants tossed behind the gardens. Birds or other animals might eat them.

Two dozen tomato plants that weren’t good enough to sell found homes in a few other areas around the property. Most are surrounded by posts and deer netting, although the deer did find—and destroy—90% of the big sunflowers meant for the winter songbirds… …

 

 

***Tomato Update***:

(This section added 9/4/2022.)

Tomatoes generally are underproducing. Those getting just an hour more sun are yielding fairly well, but not abundantly. Gardeners in this region experienced devastating blights on tomatoes from frequent rainstorms and persistent humidity.

After planting cleaned up not-quite-dead tomato plants, I sprayed them with a solution of dissolved aspirin. Here’s another link. They recovered better than I had any hope of expecting. Although not receiving the recommended biweekly spraying, they’re still producing fruits.

Later in the season, tomatoes had sun scald due to the sparse foliage, so I shaded new fruits with mesh bags, old peat pots, or large cucumber leaves. Sun scald causes tomatoes to rot.

 

tomato shaded with peat pot to prevent sun scald

Tomato shaded by old peat pot.

 

 

Headings

Page 1: Patches For Pollinators (Japanese Beetles, Japanese Beetle Life Cycle), Less Grass To Mow With Patches For Pollinators (New Gardens, From Crape Myrtle To Virginia Sweetspire, Not In the Pink, Vegetable Gardens, Miniature Broccoli ‘Happy Rich’, ‘Happy Rich’ and Insects, Tomatoes, Tobacco Hornworms, Tomato Update)

Page 2: Long Vines That Might Smother the Grass (Next To the Tree Stumps), Patches For Pollinators: Don’t Mow Here (Weeds To Watch, Early Patches For Pollinators, Late Spring and Summer Patches For Pollinators, Patches For Pollinators: Living Proof, The Saddleback Caterpillar), The Pretty Moths and Butterflies

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Pollinators: What’s All the Buzz About?

 

What’s All the Buzz About Pollinators?

 

 

Trips to the garden center and articles about landscaping and edible gardening. Radio garden programs and school field trips. What do they have in common?

 

 

fruit tree, honey bee

 

 

The subject of Pollinators will come up!

 

 

bee, pollenAnd for good reason: we rely on pollinators for more than a third of our entire food supply! Without the bees, butterflies, bats, and hummingbirds, we would not be able to feed our growing populations. Apple, peach, and nut trees, tomatoes and peppers. Zucchini, cucumbers, berry bushes, and farm animal feed. These are just a few crops that depend on these little critters. Trees, grasses, shrubs, and wildflowers also rely on pollinators for procreation.

Pollinators are attracted to the flowers’ sweet nectar, for carbohydrates, and to pollen for proteins and lipids. Insects and other pollinators gather nectar and pollen from the flowers they visit. During this beneficial arrangement, called mutualism, they unintentionally transfer pollen grains from one flower to the next.

 

The Fruits of Pollination

Pollen (the male component) deposited onto a receptive stigma (female) in a flower belonging to the same species initiates the fruiting process. The half set of haploid chromosomes in ovules and sperm are recombined during fertilization. (This is not the kind of fertilization that involves nutrients). This restores the full diploid chromosome count. The ovary (fruit) grows and toughens, protecting the seeds until the fruits are harvested or the seeds dispersed.

Fruits, though, aren’t limited to the recognizable apples, peaches, and pears on a grocery store shelf. Botanically, a fruit is any seed- or spore-bearing structure in flowering plants and other organisms. This includes wheat, a kernel of corn, a plump blueberry, a sweet cherry, or an heirloom tomato. Even fungi, including mushrooms, have “fruiting bodies”.

Animals attracted to these nutritious fruits aid in seed dispersal, although in many cases, the seeds themselves are consumed and digested.

And there are some anomalies in Mother Nature’s kingdom that permit us to call strawberries “fruits” or “berries”, although they are neither! The luscious little strawberry is the swollen receptacle, the part that connects the flower to the stem. The actual fruits, or achenes, are those little brown things on the outside. And there’s a seed inside each achene.

No pollination means no fruit in up to 80% of our edible crops!

 

 

Honey Bees

 

honeycomb, bees--pollinators

A honeycomb.

 

Honey bees (Apis mellifera) are not native to the Americas. They originated in Africa and migrated to Indonesia, Europe, and Asia. The early colonists brought them here, where they proliferated throughout the frontier, preceding the settlers’ expansion into new territory. Before this species was imported, thousands of other types of insects and animals pollinated flowers. And they still do!

As the nation’s population grew, more crops entered cultivation. Agriculture became even more dependent upon these easily domesticated pollinators.

 

almonds

Almonds.

 

California’s almond harvest relies entirely on bee activity for nut production. In fact, beekeepers ship 75% of the country’s “beehives for hire” to flowering almond orchards to ensure a good crop.

Of the many thousands of bee species found worldwide, the honey bee is the only one that makes honey. Forager bees returning to the hive with nectar give this bounty to the processor bees. Processors pass the nectar among themselves, helping to lower the water content. Then they deposit the liquid into cells and fan it with their wings to concentrate the honey. After that, they cap the cells with wax to seal the compartment.

Forager bees mix their saliva with the pollen they collected, which the processors place in the cells. Once they’re capped, the mixture begins fermenting, resulting in a substance called bee bread. Both types of cells, with pollen and nectar, also contain enzymes from the bees. Nurse bees feed this bee bread to all larvae, and the colony can access it for sustenance during winter. Enriched bee bread, called royal jelly, is reserved for queen larvae. Not all the honey is harvested by beekeepers; most is kept in the hives.

 

Why All the Fuss About Pollinators?

A syndrome known as Colony Collapse Disorder has raised the alarm to protect the honey bees. It is not precisely known what prevents most of the bees from returning to the hives. However, it is known that the queen, the larvae, and the honey have been abandoned. Without help from the drones and worker bees, the colony fails.

This is not a new phenomenon, though. Farmers a hundred years ago reported losing up to 90% of their bees to this “disappearing disease”.

CCD was named around 2006, when sudden losses affected increasingly larger proportions of total hive counts. By then, some honey bee operations had lost 50 to 90% of their hives. For the next 8 years, farmers reported hive losses averaging 33% per year.

 

Current Research

Research has pointed to several possible explanations, although combinations of factors are probably in play. In 2013, the U.S. Department of Agriculture and the Environmental Protection Agency joined forces to monitor CCD.

Various avenues of research are being pursued involving mites, fungi, loss of habitat, and lack of genetic diversity. Additional issues include chemical contamination of food sources and agricultural pesticides, notably the controversial neonicotinoids and fungicides. The Varroa mite and phorid flies are being researched for diseases that they could be vectoring into the hives.

Another question centers on pollen’s nutritional content from our crops, which might be weakening immunity.

In 2006, the honey bee’s genetic code was sequenced, opening up molecular approaches to treating CCD. Continuing research projects, through surveys, samples, and mitigation techniques overseen by the USDA, are getting closer to solutions. Unfortunately, there are no definitive answers for now.

Courses of action currently being followed include using antibiotics, fumigants, and genetic stock showing immunity to disease.

 

bee on pink aster flower, pollinators

Honey bee on aster.

 

 

So, What Can We Do About It?

 

To Spray Or Not to Spray

We can manage our properties in ways that are less harmful to the bees’ health. First, consider whether or not we really need to spray every insect that shows up in our landscape. No, of course we don’t!

Maybe you’ve been using a certain product for the last 30 years because it has delivered a 100% kill rate. Overkill? Okay, then, now might be a good time to reassess the need for it. By the way, most municipal recycling stations take old or unwanted containers of chemicals. Please don’t throw them in the trash or pour them down the drain or in the yard!

Make some changes today that help restore ecological health and predator/prey balance to your landscape.

If there are only a few pests damaging your plants, hand-pick them. Cutting them in half or squashing them is more humane than salting them or dropping them in a bucket of soapy water. Never use salt in the garden. A strong spray of water from the hose will wash away most of the aphids.

It’s unrealistic to be entirely free of insect life. And no one wants to live in that world.

 

Try Using These

In my gardens, I rarely use anything stronger than horticultural oil, organic Sluggo, or Bt. All of them are available in garden centers. See if you can tolerate less than perfect foliage or fruit in return for a cleaner environment. As I grow older, imperfection becomes increasingly acceptable.

Investigate some of the organic options, which are gaining favor throughout the gardening world. The products I mentioned are available from some manufacturers that have been licensed to print the “OMRI” logo (Organic Materials Review Institute) on their labels. Some companies choose not to pay the licensing fee, but their products are “just as organic” as the OMRI products.

Most importantly, don’t spray plants when pollinators are actively visiting them. The products mentioned above do not harm honey bees if used according to label instructions. Follow them carefully, paying special attention to dilution rates and time of application.

Bt

Bt (Bacillus thuringiensis) is a naturally occurring bacterium that paralyzes the digestive system of moth and butterfly larvae by changing the pH in their gut. After ingesting some of the Bt, the caterpillar stops feeding and dies a day or two later. It is more effective on younger caterpillars.

kale with caterpillar holes

Dinosaur kale with caterpillar holes.

I use it on the brassicas (broccoli, kale, etc.) to prevent utter devastation by caterpillars. Not using it at all means more than just a few holes in the leaves. The leaves disappear!

It works on gypsy moths, canker worms, cabbage worms, cutworms, squash vine borers, tent caterpillars, and the “very hungry caterpillar” known as the tobacco hornworm, among others.

The tomato hornworm looks similar to the tobacco hornworm (photo, below), except it has V-shaped lines and a black “horn” instead of a red one. But, again, if you see entire tomato stems denuded of their leaves, look for that hornworm first before filling the sprayer. There might be only one or two on a large plant. (Tip: if you see their poop pellets, look above them.)

Different strains of Bt also control fungus gnats, potato beetles, mosquitoes, and nematodes.

 

tobacco hornworm

Tobacco hornworm with parasitic wasp pupae.

 

Braconid Wasps

This species of Braconid wasp, Cotesia congregata, will kill or severely weaken the tobacco hornworm (photo, above). First, a female wasp lays eggs on or in the caterpillar. After hatching, the wasp larvae feed on the caterpillar’s internal tissues, and then pupate in the white cocoons.

Although it looks menacing, there’s really no need to spray this one. Simply remove the weakened caterpillar to the shrubs. The adult wasps will emerge, and then a bird or a lizard might finish off the caterpillar. The adult form of the hornworm is a type of hawk moth.

 

 

Headings

Page 1: What’s All the Buzz About Pollinators? (The Fruits of Pollination), Honey Bees (Why All the Fuss About Pollinators?, Current Research), and So, What Can We Do About It? (To Spray Or Not To Spray, Try Using These, Bt, Braconid Wasps)

Page 2: Planting for Pollinators (For Bees, For Butterflies and Moths, For Hummingbirds), Pollinators In the Landscape (Plant Selection, Host Plants and Nectar Plants, The Importance of Native Plants for Pollinators, Water and Minerals, Shelter), Attracting Pollinators to Your Garden, and National Pollinator Week

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