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Oct 16, 2021 2:27 AM CST
Name: Granpops
England South Yorkshire
This year I've had no flowers from my irises, unlike previous years when I've had a good display.
Has anybody else suffered the same and what do you think is the reason.
My plants are relatively young, 2-3 years old.
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Oct 16, 2021 4:34 AM CST
Name: Andrea Reagan
Astatula, Florida (Zone 9a)
I collect seeds
Bee Lover
Hi! Granpops; I live in Florida and some of my bulbous plants such as Amaryllis have not flowered either. The ones that have flowered are also very few unlike other years.
Kevalsha
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Oct 16, 2021 5:39 AM CST
Name: Lynda Horn
Arkansas (Zone 7b)
Eat more tomatoes!
Bee Lover Lover of wildlife (Black bear badge) Tomato Heads Salvias Lover of wildlife (Raccoon badge) Peppers
Organic Gardener Native Plants and Wildflowers Morning Glories Master Gardener: Arkansas Lilies Hummingbirder
Bearded iris often have the main rhizomes die over the years, but the main rhizome grows a new, smaller rhizome. The new rhizome may take several years of growth before producing blooms. I have a large section of bearded irises in my perennial garden that have been there for 7 years, and I don't always have the original colors bloom every year.
Iris should be dug up every couple of years, the old, rooted parts cut away, and the newest rhizomes re planted for optimum health and flowering. I'm very tardy in getting this done. *Blush*
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Oct 17, 2021 4:39 PM CST
Name: Robin
Melbourne, Australia (Zone 10b)
Region: Australia Garden Photography Cat Lover Irises Seed Starter
Welcome! to the forum Granpops Smiling

It may also be possible that the irises have used up all the nutrients in the soil. I usually apply a thin layer of new topsoil each year over my irises.

There is a good answer to your question in one of my old iris catalogs from an iris expert:
"This can be caused by a number of factors and usually a combination of more than one. Planting in too much shade. Overfeeding with animal manure or blood and bone, or the reverse no feeding of anything. Planting too deep.... Mulching with lawn clippings and other organic matter. Over or under watering can also cause problems. They need replanting every 2 to 3 years or overcrowded starved iris will not flower". The ideal planting depth varies depending on your weather conditions. He also mentions that weeds and ground covering plants should be cleared away from the irises.
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Oct 17, 2021 6:57 PM CST
Name: Sherry Austin
Santa Cruz, CA (Zone 9a)
Birds Bulbs Region: California Dragonflies Foliage Fan Irises
Keeper of Poultry Roses Photo Contest Winner: 2015
I'll add one more, to the list you provided, Robin..
Iris don't like root competition. Tree roots can quickly move into a bed where the soil had been tilled, fertilized, and amended.. They can be greedy sucking up all the nice nutrients.
The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
Last edited by Henhouse Oct 17, 2021 9:24 PM Icon for preview
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Oct 17, 2021 11:02 PM CST
Name: Evelyn
Sierra foothills, Northern CA (Zone 8a)
Irises Region: Ukraine Garden Procrastinator Bee Lover Butterflies Plant and/or Seed Trader
Region: California Cat Lover Deer Bulbs Foliage Fan Annuals
Henhouse said:I'll add one more, to the list you provided, Robin..
Iris don't like root competition. Tree roots can quickly move into a bed where the soil had been tilled, fertilized, and amended.. They can be greedy sucking up all the nice nutrients.


I agree
"Luck favors the prepared mind." - Thomas Jefferson
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