Coneflowers are a popular prairie flower so named for the distinctive cone shape of the blossoms. Coneflowers are hardy to USDA zones 3 through 9 and will grow prolifically and spread easily in these regions. Coneflowers range in color and height and add a pleasant display to any flower garden. Maintain your coneflowers by keeping the soil evenly moist and fertilizing the coneflowers regularly throughout the growing season.
Fertilize new coneflower plants two times over the first growing season by sprinkling the granular fertilizer onto the soil around the plants. Use 1 lb. of fertilizer over each 100 square feet of growing area. Fertilize the first time six weeks after the plants begin to grow. Feed established coneflower plants in the same fashion, except provide the first feeding immediately prior to any growth beginning for the season.
Mix the fertilizer into the soil with the hand rake and water to moisten the soil thoroughly. This will activate the fertilizer.
Fertilize new coneflowers the second and final time of the season six weeks after the first feeding. Fertilize established coneflowers every six weeks throughout the remainder of the growing season.
Things You Will Need
- Granular fertilizer (10-5-10)
- Hand rake
- Compost (optional)
- Instead of fertilizing with a synthetic fertilizer, consider sprinkling 1 inch of compost over the soil along the plants instead. This is a "side dressing" of compost. Work the compost in to the soil with the hand rake.
- Do not allow the granules of fertilizer to contact the stems or foliage of the coneflowers because the fertilizer could burn the sensitive foliage.
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