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John Fulton

John Fulton
Former County Extension Director

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In The Backyard

Horticulture columns and tips done on a timely basis

Fall Clean Up Time

Posted by John Fulton -

Fall is definitely upon us, and we know the season coming next! While the weather is somewhat cooperative, it is time to take care of some of those final outside chores. At least you'll feel prepared when the weather turns cold, and the main gardening activity is planning for next year.

Leaves have been one of the main clean-up items this past week. They will continue to be an item, so here are a few options for you. Mulch them where they aren't too thick. You can mulch with a mower, blower vacuum, or a chipper. This will reduce the volume greatly. Then the mulched leaves can be used as, well, mulch; but they may best be used on beds away from the house. The decaying organic matter tends to increase the millipedes, pill bugs, and other nuisance pests around the house. Composting is also a great option. Composting leaves isn't tricky, it just takes a little bit of formulation. The rule of thumb is to add about one-fourth of a cup of commercial fertilizer per compressed bushel of leaves, or to use one part leaves and 2 parts of green material such as grass clippings or green material removed from the garden. Mulching before composting is a double-edged sword. The finer material will decompose quicker, but it will also compact more and reduces the oxygen need to make compost. For more information on composting, check the website at

Tender bulbs, roots, or corms should be dug, if you already haven't done so. These would include dahlia, cannas, caladium, tuberous begonia, and gladiolus. Many of these will actually have rotting problems from frost. Be careful when digging so the bulbs are not cut, as any wound usually means a rot will begin. Any bulbs that look diseased should be thrown away. Most can be dried at room temperature, but gladiolus should be dried at a higher temperature (70-80 degrees) and dusted with malathion to protect against thrips. Store all the bulbs in a cool, dry place.

Plants which are completely dormant, such as peonies can be cut back. Leave a couple inches above ground on plants such as mums since they store food above ground as well as below. The couple inches will also help catch snow and leaves to help create a "self mulched area" to help them survive the winter. Clean up around fruit trees, the garden area, and flower beds. Materials may be composted as long as they are not severely diseased.

December through February are the best months to apply the plugs to pin oaks and other trees which show iron chlorosis. You are best to not do any pruning at this time. Wait at least until December for the non-evergreens, with December being the best month for oaks (due to oak wilt) and maples and other trees with a high sap flow. The December to February time period is the best for pruning most non-evergreens. Do those in late June.

Generally knockout roses don't require special care in hardiness zone 5 or south. We are in zone 5b. If you do want to do something because of prior problems, you can mulch the crown area. Some go to the extreme and burlap them or put wire around them and fill with leaves, but that is entirely up to you. The basic care is a pruning, if needed, in the early spring to size or shape.

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