It’s Time for a Dust Buster Session
By Lynda C. Welchel
Reprinted from the September, 1990 African Violet Magazine
The next time you go into your living areas at home, stop and take a few moments to observe the dust that collects on your table tops, television screen, mirrors, plant lights, etc. That same amount of dust, and perhaps more things may be clogging the pores of your plants. Take a blanket from a bed and try shaking it. Notice the amount of dust that flies through the air. If our African violets are to be grown to their best potential, they must be kept free of excessive dust and debris.
Taking care of the debris portion is easy. This fact of care should be a matter of routine. Remove dead blossoms, damaged leaves, etc., as they occur. If dead leaves or blossoms are left on plants, fungal infections may develop and spread to the rest of your plant and possibly spread to the rest of your collection.
That constant pest, dust, will clog up the pores (the working surface of leaves) and hinder photosynthesis, thereby slowing down the growth of your plant. Whether we like it or not, dust is everywhere and unfortunately, here to stay. Sweeping your floor, dusting in your plant room, or running the vacuum, will not prevent dust from settling on your plants. In fact, the simple act of cleaning stirs up more dust, that will happily take up residence on your plants.
Look at an African violet leaf, you will see that it is hairy and therefore a master at trapping dust and anything else that is floating around in the environment. This may include residue from ant-fungus sprays, insecticide sprays, furniture polish (spray), air freshener, etc. If you keep your plants in your bathroom or dressing area, your plants may even be sporting a coat of hair spray or after bath powder! Put your ear very close to your plant, you may even hear it gasping for breath. Try putting a little hair spray on your arm. Let it dry, now you know what it feels like. Your plant is helpless to cleanse itself. Just imagine hair spray combined with dust, accumulating over a few months. It’s time for a “Dust Buster Session.”
There are two ways of removing dust and dirt from your plants, either by brushing or washing. Take a moment to look at a leaf of your African violet plant again. Notice the hairs on the leaf generally grow away from the center or crown of the plant. Brush the leaf with gentle strokes (a make up brush is great.) Do not use hard bristle brushes, as they will bruise the leaves. When attempting to rid your plants of dust, use a soft brush, but not too soft, because it will not adequately remove the dust. Be sure to support each leaf in turn, by placing your fingers underneath the leaf, to support it, then brush away from the center of the plant. It is especially important to support the leaves of large standard plants. They often times can be very brittle and I’m sure most of us have heard that dreaded crackling sound of a leaf breaking off and thereby ruining the symmetry. A petiole can be easily broken if you aren’t careful. You might try leaving on a leaf support while dusting off your leaves, for added safety.
If you brush your plants every 1 – 2 months, you will prevent any major build-up of dust and debris. One word of caution: if you think you have any pests or diseases on a plant, remember you can spread the problem as you go from plant to plant.
What about the case of neglected plants, or you have too many to brush each leaf on every plant individually? You may want to try your hand at washing your plants. Depending on the type of water you have, you may not want to use tap water to bathe your plants. Water that contains lime, salt or other additives may leave a residue on the plants, after they are washed. If this is the case, try using distilled water in a mister, instead of bathing your plants at the sink.
The most important thing to remember when bathing plants is to use warm water. If you decide to use a spray/mister, the water should be hot. By the time the water is sprayed out of the bottle, into the air, and onto the plant, it will have cooled considerably. If your water is suitable right out of your sink,, using warm water, hold the plant on it’s side and let a small stream of water run over the leaves, being careful not to wet the crown (center of the plant.) The warm water as it flows over the leaves, will carry water with it, the accumulated dust, spray residue, and those particles of perlite, etc. This procedure should be carried out under warm conditions in your home. Do not allow the plants to be exposed to drafts. If you are comfortable in a room, your plants will be comfortable also.
The plants should be allowed to dry before returning them to an area where they get direct sunlight and under no circumstances should they be exposed to sunlight when wet! If you happen to get any water in the crown of the plant, blot it up with a tissue, possibly leaving the tissue there for a few minutes to absorb any small droplets of water that may have been left behind. When I have finished bathing my plants, I usually place a paper towel over each one and a tissue on the crown, for a half hour or so, before I return them to the plant room and back under the lights.
Giving your plants a bath is best done in the morning hours, so the plant will have adequate time to dry before the cooler hours of the evening. Leaving your plants wet could cause mildew and other diseases. If you are growing under lights, you can return your plants to the light when there are no droplets of water visible.
Let the appearance of your plants guide you as to whether they need to be brushed or bathed. Conditions vary from grower to grower. Some homes have more dust than others. During the hot months, air conditioning certainly helps to remove dust from the air. The amount of traffic you have near your plants can make a difference too. Dust is stirred up by just walking past your plant stands. One area of the country may be drier than another and thus have more dust. If you have a dog or a cat, you may have the added problem of animal hair, especially during the warm months when our domestic pets tend to shed. There are many variables.
Keep your plants free of debris, and dusted. They will breathe better and you will breathe a sigh of relief before show time knowing you don’t have to risk washing your plant with a full head of blossoms and possibly cause injury to the plant. Spray residue and dust detract from African violets. Speaking of dust, remember to periodically dust the light tubes on your plant stand. Dust cuts down on the intensity of available light coming from your tubes.
Whether you are a casual admirer of African violets or an avid grower, this “TLC” will pay great dividends for the small amount of time invested. Listen carefully, your violets may be choking and whispering in desperation, “It’s time for another Dust Buster Session.”