Should Bulbs That Are No Longer Producing Flowers Be Dug Up?

Question

I planted my Siberian Iris in 1986. They have been producing fewer and fewer flowers for the past 5 years. This year there were only 8 blooms on quite a large patch. I want to plant new ones this fall. Should I remove the old bulbs? Thank you. Linda Velleco

Answer 1

That would be best. Removing them, and amending your soil, will be the appropriate course of action.

Here are some articles that will help you to prepare your soil once you get them removed:

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/what-is-soil-made-of-creating-a-good-garden-planting-soil-type.htm

https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/why-does-soil-need-aerating.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers