How to Feed Geraniums

Overview

Geraniums produce bright flower heads atop tall slender stems that float above the foliage. Although they appear to be one large bloom, geranium blooms are actually a cluster of tiny flowers that make up the flower head. These short-lived perennials survive for several years if over-wintered properly. The key to growing vigorous plants with vibrant blooms lies in proper fertilization.

Step 1

Plant geraniums in soil rich in organic matter. A 2- to 3-inch layer of well-rotted manure or compost improves drainage and provides nutrients to growing plants. Fresh manure robs the soil of nitrogen as it decomposes and should be avoided.

Step 2

Apply slow-release or water-soluble fertilizer with a balanced formula like 10-10-10 or 8-8-8 once a month. Fertilizers high in nitrogen (the first number in the formula of fertilizer) produce lush foliage but often inhibit blooming.

Step 3

Dilute fertilizer to 1/4 to 1/2 strength for geraniums grown as houseplants and apply every two weeks to provide a steady source of nutrients.

Things You'll Need

  • Balanced fertilizer (10-10-10 or 8-8-8)

References

  • North Carolina State University Extension: Geranium Culture for Home Gardeners
  • eXtension: Geraniums are Relatively Easy to Grow from Seed
  • Clemson Cooperative Extension: Growing Geraniums Indoors

Who Can Help

  • University of Rhode Island Extension: Geranium Culture
  • TAMU Extension: Geraniums: How to Grow and Propagate Them
  • Iowa State University Extension: Growing and Over-wintering Garden Geraniums
Keywords: feed geraniums, fertilize geraniums, geranium care, geraniums

About this Author

Nannette Richford is an avid gardener, teacher and nature enthusiast with 4 years experience in online writing and a lifetime of personal journals. She is published on various sites, including Associated Content. Richford holds a Bachelor of Science in secondary education from the University of Maine Orono and certifications in 7-12 English, K-8 General Elementary and Birth to age 5.