Garden Calendar

This time table is for St. Louis Missouri, but should work for most Zone 6 areas. I will adjust it this year as my plants dictate.

After flowering – Amsonia – cut back a third and shape
After flowering – Baptisia – cut back a third and shape
After flowering – Maltese Cross – cut down to base
After flowering – Monarda – cut to base
After flowering – Salvia – cut back to base
After flowering – Shasta Daisy – cut to base
After flowering – Veronica spicata – cut down to base
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04-01 Rue – prune to 6″
05-15 Solidago rigida – pinch
05-20 Agastache – pinch
06-01 Ironweed (old) – cut down to ground when 2 feet
06-01 Monarda – cut back by half – once or twice.
06-01 Shasta Daisy – layer front row for lower display
06-05 Sedum – cut back to 4″ when 8″ tall
06-06 Solidago – cut back by half
06-07 Hibiscus – when 16″ tall – cut back by half
06-07 Echinacea – cut back some by 1/2 to delay bloom
06-10 Liatris – TEST – cut back by half when 18″
06-10 NE Aster – cut back by half for native – shape
07-10 NE Aster – cut back by half for native – shape
08-10 Coreopsis verticillata – shear blooms
08-20 Agastache – cut back to rebloom
08-30 Gaillardia – cut down to base
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2 Comments

Filed under Misc

2 responses to “Garden Calendar

  1. Anonymous

    Great: exactly the kind of help I need each spring. Thanks tom!

  2. Jay

    Love your list! Such a helpful reminder. Thank you very much.

    I like it that you mention cutting back part of a planting to stagger blooms and lengthen the bloom season. I do this too with daisies, cone flowers, lavenders, sages, etc. And you reminded me to cut back some new growth to keep some leggy plants manageable. Brilliant!

    Can’t wait for spring to come. I have my hyacinths up which usually attract a few early butterflies, but so far not this year. Oh, well… j.

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