How to Feed Geraniums


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)


  • 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.