Day: March 14, 2018

Perennials for Midwestern Clay Soils

Most of the Midwestern area is comprised of clay soils. Never fear! This is a much better situation to have than sandy soils. Clay soils maintain more minerals and moisture than other soils.

Sometimes clay soils can be bad, such as in conditions where there are more problems than just the soil. If while digging in the soil, it looks blueish-black and smells kinda off, this is because of poor drainage and the smell is from rotting organisms. The area should be assessed for drainage problems before anything else is done.

If the clay is a redish-orange, this is perfect as the soil is holding all the minerals plants crave.

The soil should be mixed with a fair amount of compost to help perennials get a good start. If the soil is very compacted, some sand can be mixed it also. Be sure to surround the perennial bed with leaf compost to aid in nutrients getting to the roots and all the other benefits mulch does for plants.

  • For Trees and Shrubs for clay soils ~ CLICK HERE
Botanical Name Common Name Bloom Color Light
Achillea tomentosa woolly yarrow Jun-Jul yellow sun
Achillea filipendulina fernleaf yarrow Jun-Jul yellow sun
Arisaema spp. Jack-in-the-pulpit May-July green/purple shade
Aruncus dioicus goatsbeard Jun-Jul white ps/sh
Asclepias tuberosum butterflyweed Jun-Aug orange et al sun
Astilbe arendsii & var. false spirea, astilbe Jun-Aug white-pink-red ps/sh
Bergenia cordifolia heartleaf bergenia Apr-May pink ps/sh
Brunnera macrophylla Siberian bugloss Apr-May blue ps/sh
Echinacea purpurea purple coneflower Jul-Oct pink sun
Helenium autumnale
‘Moerheim beauty’
Sneezewort Jul-Sept bronze red sun/ps
Heliopsis scabra Heliopsis Jul-Aug yellow sun
Hemerocallis spp. daylily summer many sun/ps
Heuchera hyb. coral bells Jun-Aug white-pink-red sun/ps
Hibiscus spp. rose mallow Jul-Sept white-pink-red sun/ps
Hosta spp. plantain lily Jul-Aug lavender ps-sh
Houttuynia cordata ‘Chameleon’ houttuynia June white sun/ps
Iris sibirica, pseudo-
acorus, versicolor, etc.
Siberian and blue and yellowflag iris variable blue, violet, yellow et al. sun/ps
Liatris spicata gayfeather, blazing star Jul-Aug pinkish sun/ps
Liriope muscari lily turf Aug-Oct lavender-mauve-white ps/sun
Lysimachia spp. Yellow loosestrife, gooseneck loosestrife Jul-Sept yellow-white sun/ps
Perovskia atriplicifolia Russian sage Summer Lavender sun
Primula spp. primroses Mar-Jun many ps/sh
Rudbeckia fulgida ‘Goldsturm’ Goldsturm rudbeckia July-Sept yellow sun/ps
Salvia spp. salvia, sage Jul-Oct blue-violet sun/ps
Sedum spectabile var. stonecrop, sedum Aug-Oct pink-red sun
Tradescantia virginiana spiderwort Jun-Sept blue-violet-white sun/ps
Yucca filamentosa Adams’s needle summer white sun

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