Northern Plains August Garden To-Do List

Support your plants. Top-heavy plants such as delphiniums (Delphinium spp. and cvs., Zones 3–8), dahlias (Dahlia spp. and cvs., Zones 8–11), and lilies (Lilium spp. and cvs., Zones 4–9) will benefit from additional support to keep them upright in heavy wind and sporadic summer storms.

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