info on delphiniums, ladies mantles, and transplanting - Knowledgebase Question

kalamazoo, MI
Question by dfgquilter
June 25, 2009
I have several questions....
1. When is the earliest in the fall that I can transplant perennials safely?
2. Do Ladies Mantles need full sun, shade or part of each?
3. How do I maintain my Delphiniums? Do they need mulch now and also in winter? What fertilizer?
Thanks alot! Dorian

Answer from NGA
June 25, 2009


You can dig, divide and transplant your perennials in late summer when they have finished most of their flowering or in the early fall. Either way will give them several weeks of growing weather to re-establish their root systems before winter weather arrives. Lady's Mantle will grow in bright shade or in morning sun. They don't seem to like hot afternoon sunshine so avoid that when you place them into yor garden. Delphiniums flower early in the season. When the flowers are spent cut the entire flowering stem down to almost ground level. Two new flowering stems usually appear but they will be much shorter than the first flower stem. But, you'll get a second bloom, which is a great reward for a little pruning. Mulching helps maintain soil moisture and suppress weeds. I'd add mulch now. You can feed everything in the spring with a time release granular fertilizer or you can feed throughout the season with a liquid fertilizer such as Miracle Gro. Be sure to follow label directions. Enjoy your garden!

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