Monday, August 24, 2026

Volunteer

 August 2025

Pickaway to Garden

Volunteer

By Paul J. Hang

A volunteer is someone who performs a task without pay. If you garden you are a volunteer, unless you garden for someone else for pay. In the plant world a volunteer is a plant that grows without having been intentionally sown or planted. Weeds come to mind. Of course the old definition of a weed is a plant growing where you don’t want it. But that can apply to real weeds like ragweed, poison ivy or Canada thistle. Or, it can apply to plants we like and might want to keep.

I often hear people mention their volunteer tomato plants. They are free but you don’t want to let them grow where they came up if it is where you grew tomatoes the last couple years. Diseases in the soil can carry over. We should rotate most crops. You could dig them up and plant them elsewhere. However, you might be surprised at what variety you get. If they came from the seed of a hybrid you won’t know what traits it might have inherited.

Some of the volunteers I get are trees, some I like, and some I don’t. Thanks to squirrels I have to dig up about a dozen walnut trees every year. I like walnuts and walnut trees but I don’t want them growing near my desirable plants and vegetables. They produce a chemical, juglone that retards the growth of most other plants, especially tomatoes. I also get Pin oak seedlings from the tree across the road. I get Shingle oaks from who knows where. I only know of one over a mile from “This ole Thistle Farm.” I get Mulberry and Hackberry trees. I don’t want the Mulberry because they are weedy and they are almost always the non-native White or one of its hybrids from the native and disappearing Red Mulberry. I already have enough Hackberry, another rampant volunteer.

Nice trees I might dig up to give away. Often I don’t see the volunteer trees until they appear in or even above a shrub. If a sapling is straight I might leave it until it is the right size to make a walking stick before I remove it. Don’t get me started about Silver Maples. Learn to recognize their leaves. It might be a Red or Sugar Maple. The other day I was admiring my late blooming Tardiva hydrangea only to see a maroon Rose of Sharon, another prolific volunteer, staring out at me among the white blooms.

If I see an unfamiliar plant beginning to grow “out of place” I might let it grow until I know what it is. Then, I decide whether to let it be, transplant it, or remove it to be given away or put in the compost bin. I am a Master Gardener Volunteer so I am not against volunteering. Volunteering can be a useful and good thing. Many valuable things would not get done if it wasn’t for volunteers. Volunteering is good for us. But just like with plants, you need to be discerning and choose wisely. Know what you like and then go for it.

Big tomatoes not ripening? I learned at the Midwest Native Plant Conference, the cause is night time temperatures in the mid 70’s. Once our nights cool off they should start to ripen.

Things to do in the garden:

August is Tree Check month. Water if we don’t get at least an inch of rain each week. Water at the base of the plant and do it in the morning. Water trees and shrubs planted in the past two years or if they look distressed. If you see lichen on your trees, rejoice it’s a sign of clean air.

You can still have a fall garden. Plant healthy looking broccoli, cauliflower and cabbage plants early in the month. Direct-seed beets, spinach, turnips, and snap peas mid-month. Other vegetables that grow well in cool weather but should be planted a little later are lettuce planted through August and September, carrots and radishes in September.  Count the days before the average frost (mid-October), veggies that have that many days to harvest can still be planted. Check the seed packet. Given our milder winters don’t be afraid to experiment. Keep the seeds and soil moist for best germination.

Harvest vegetables and herbs in the morning for best results. Dig potatoes if the vines have died. Harvest onions when the tops fall over and cure them in the sun for a few days. Consider donating excess to the food pantry.

As plants die back or stop producing in the vegetable garden remove them so bad insects and disease don’t have a place to over-winter. Some landscape plants, such as coneflowers and those with hollow stems, also native ornamental grasses, can be left alone for insects and for seeds for wintering birds or for visual winter interest. Put the debris of healthy plants in the compost bin, diseased plants in the trash. Pull crabgrass and other weeds before they go to seed.

This is the time to renovate or build a new lawn. Do your research at ohioline.osu.edu. Start cuttings of coleus, begonias, geraniums and impatiens for growing indoors this winter. Move houseplants to a shady spot to prepare them to move indoors. Disbud and fertilize your dahlias for bigger blooms. Fertilize (side dress) peonies and roses with a balanced fertilizer such as 10-10-10 or 12-12-12. Order garlic and spring flowering bulbs, plant biennials. Divide, transplant or give away perennials that are overgrown and plant new container grown ones. Add new mulch where needed. Pull weeds before they go to seed.

Big tomatoes not ripening? I learned at the Midwest Native Plant Conference, the cause is night time temperatures in the mid 70’s. Once our nights cool off they should start to ripen. By the end of the month consider disbudding your tomato plants. Remove the growing tips of each branch and pinch out all the blossoms that bloom. It takes six weeks from blossom to fruit. This results in bigger tomatoes and prevents those marble size tomatoes that never reach the table. Experiment! Try this with melons and winter squash. Consider picking tomatoes before they are completely ripe. They will ripen off the vine if they show a blush of green on an otherwise red, purple or yellow tomato. Totally ripe tomatoes still on the vine can burst with a glut of water from rain or the hose, if we should be so lucky. They can also be sampled by birds and mammals.

Monitor for pests. Check under the leaves. Use organic methods first. Remember, 97 percent of insects are either good or neutral. To eliminate bad bugs, the two-step stomp technique can be quite effective.  Or, just flick them into a cup of soapy water. No bug species has developed a resistance to these tactics. Need gardening advice? Call the Gardening Helpline at the OSU Extension Office 474-7534. Other resources are ohioline.osu.edu and Buckeye Yard and Garden Line (bygl.osu.edu). 

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