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Light spots on leaves

Posted by galcho z8 Northwest (My Page) on
Thu, Jul 17, 08 at 12:02

Any idea why leaves on my plant have light spots? In general bush looks healthy, has buds ready to flower, but leaves look bad.
thanks


Follow-Up Postings:

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RE: Light spots on leaves

  • Posted by galcho z8 Northwest (My Page) on
    Thu, Jul 17, 08 at 12:34

Adding picture:


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RE: Light spots on leaves

  • Posted by jroot 5A Ont. Canada (near (My Page) on
    Thu, Jul 17, 08 at 12:49

I see something on the top leaves that concern me. Check under the leaves. Do they have spider mites on them? They are barely visible with a magnifying glass, but leave fine webs. Particularly check near the ends of the leaves. If so, a pesticide spray, or a mixture of dish soap, rubbing alcohol, and water may be in order.

I see the white spots near the bottom. These white spots can be caused by sun hitting the water drops, which in turn act like a magnifying glass and end up burning the leaf. When watering try to water the base of the plant rather than the leaves, particularly if after 9:00 a.m., but better still try to water around 7:00 a.m. when the sun is not too strong.


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RE: Light spots on leaves

This watering thing is complicated. I have a sprinker system and a big lawn. I need to water the lawn but don't want to get the water on the dahlia leaves. I water them by hand. We just can't control water getting on the leaves as if it rains so be it.


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