My Leaves Have Brown Spots!
My Leaves Have Brown Spots!
Although the regular rain has been welcomed after last summer’s drought, so far the spring and early summer weather on Cape Cod has been cool and damp. This combination is pretty much a prescription for fungal problems. We’ve had customers come in with fungal conditions on lawns, perennials and shrubs. Here is a rundown of what you might be seeing in your landscape:
Blackspot is starting on roses.
Peonies have black buds that won’t open.
Lilacs have black leaf edges and flowers that brown quickly.
Hydrangeas have black spots on their leaves.
Apple trees show darkening foliage or have rusty spots on the underside of leaves.
Here’s the bottom line: none of these will kill the plants but they may look badly as a result. You can spray with a fungicide, but that only helps protect unblemished foliage…it won’t cure already infected plant tissues.
In addition to these conditions, this cool and damp weather is perfect for Impatiens Downy Mildew to be active on the regular Impatiens. So if you’ve planted regular impatiens and they start dropping their leaves and showing bare stems, chances are the downy mildew has hit once again.
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