Oak Sap – Causes
Q: For the past two years, the water oak over our deck has been raining sap in the spring. It creates a horrible sticky mess that turns black and dirty. What causes this?
A: I think you have lecanium scale feeding up high in the oak tree. These insects suck sap from leaves and twigs and produce copious amounts of honeydew. The honeydew causes a black sooty fungus. The easiest control is to use imidacloprid (Bayer Tree and Shrub, etc) each year in early April (you can still do it now). This systemic insecticide kills scale but it will probably take a couple of years to kill them all.
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Bulbs – When to Plant in Fall
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Holly Plant Allergy
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Arborvitae dry roots and proper planting
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Hydrangeas – Green Blooms
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Lady Banks Rose – Naked at Bottom
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Bulbs – When to Plant in Fall
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Milkweed for Monarchs – Growing Milkweed in Georgia
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Poinsettia – Forcing to Bloom for Christmas
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Alberta Spruce – Dying
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Grass – Mixing Fescue and Rye
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