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RE: From my garden journal: Roses and Delphiniums (Follow-Up #27)

posted by: MichaelG on 07.22.2005 at 04:41 pm in Antique Roses Forum

Wood ash is good stuff if your soil is acid. It has potassium and other nutrients, and is a hot alkalai that slugs won't cross until it has been thoroughly leached.

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clipped on: 01.16.2007 at 10:41 pm    last updated on: 01.16.2007 at 10:41 pm

RE: From my garden journal: Roses and Delphiniums (Follow-Up #26)

posted by: Molineux on 07.22.2005 at 04:14 pm in Antique Roses Forum

Won't ground coffee acidify the soil? Another option for controlling slugs is rinsed egg shells. Place them around the base of your delphiniums. As the slimy slugs move over the shells the sharp edges slice into their bellies. Gruesome but effective.

The corn meal sounds like is a good idea. Don't know about the wood ash. I'm a little wary because charcoal ash will mess up your soil something fierce. Don't ever put that stuff down. I wonder if Mancozeb or Daconil will work? Since the roses are right next to them it wouldn't be any trouble to spray the delphs too. Hmmmmmmm.

You can get around the poor drainage issue by moderating how much you water them. My clay soil retains moisture so I don't water as often.

They do like their fertilizer though. These things respond wonderfully to the Miracle grow and alfalfa meal that I put down for the roses.

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clipped on: 01.16.2007 at 10:40 pm    last updated on: 01.16.2007 at 10:40 pm

RE: From my garden journal: Roses and Delphiniums (Follow-Up #23)

posted by: MichaelG on 07.22.2005 at 03:36 pm in Antique Roses Forum

I don't have any right now-- a patch of great blue lobelia instead-- but I can offer a couple of tips for those in humid climates. Three things kill them here, poor drainage, slugs, and crown rot. Slugs will kill small transplants and plants attempting to grow out after winter. Crown rot kills in extended wet spells where the mulch and soil surface stay wet for long periods. The fungus actually creeps across the soil with brown runners. I had success by planting on a mound with the soil limed but not mulched, and maintaining a ring of dry wood ash on the soil surface. Corn meal on the surface has recently been shown to prevent crown rot by encouraging antagonistic fungi. Henry has said he gets excellent control of slugs by ringing plants with ground coffee from the bag, as caffiene is toxic to them.

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clipped on: 01.16.2007 at 10:37 pm    last updated on: 01.16.2007 at 10:38 pm