How to Feed Iris Plants

Save

Iris plants are as tough and durable as they are beautiful, so it’s little wonder that they enjoy popularity among home gardeners. They’re undemanding, easy keepers and even thrive well without fertilizer. This is a fine thing, since it’s been traditionally believed that feeding irises was downright dangerous to their health. Modern growers and hybridizers have discovered that the reverse is true: proper feeding actually does enhance the vitality and blooming capacity of iris plants. To maximize performance of these beauties, give them a little boost with proper feeding for dazzling results.

Things You'll Need

  • 5-10-10 or 5-10-5 fertilizer
  • Gardening fork
  • Feed spring blooming iris varieties only once each year -- right after they’ve finished flowering. Spread 1/2 cup of a good 5-10-10 or 5-10-5 fertilizer around each clump. Don’t put any of the product directly onto the plant. Estimate where the rhizomes are situated underground and apply the fertilizer in a band just beyond that point. Follow the packaging instructions carefully.

  • Use a gardening fork to cultivate the treated soil and work the fertilizer into the top 1 or 2 inches of it.

  • Feed re-blooming iris varieties twice each season. Fertilize in the spring just as soon as new growth appears. Apply 1/2 cup of a good 5-10-10 or 5-10-5 fertilizer to each clump, just beyond the rhizomes. Don’t get the material on the plant.

  • Cultivate the fertilizer into the top 1 or 2 inches of soil.

  • Repeat the application for re-bloomers immediately after flowering ends for the season. Cultivate the area well.

Tips & Warnings

  • If your irises aren’t blooming up to par, you may be over-feeding them.
  • Don’t feed manure to your irises. It’s high in nitrogen, which promotes rot in these plants.
  • Stop fertilizing your iris plants by mid-August. This will give them plenty of time to toughen up, harden off and prepare themselves for winter.

References

  • Photo Credit Maria Taglienti-Molinari/Brand X Pictures/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • How to Plant Dutch Iris Bulbs

    Dutch Iris blossoms are beautiful. They are a wonderful flower for late spring bloom. They also are excellent cut flowers and potted...

  • How to Treat Iris Borer

    For every climate extreme from the frigid winters of U.S. Department of Agriculture plant hardiness zone 2 to the mild, tropical climate...

  • How to Care for Iris Plants After Bloom

    Iris are truly plant-them-and-forget-them perennials that will almost grow themselves. Once they're planted in a sunny, well-drained spot, leave them alone and...

  • How to Fertilize Bearded Iris

    A spring perennial, bearded iris feature three upright petals interspersed with three downward petals, or falls, topped with fuzzy yellow "beards." The...

  • What Animals Eat Iris Plants?

    Iris plants are a group of 260 species of particularly colorful and beautiful flower. Widely grown in gardens, they make an excellent...

  • How to Pick Iris

    Learn how to choose the perfect irises for your summertime garden in this free educational video series.

Related Searches

Check It Out

How to Make a Vertical Clay Pot Garden

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!