QA

When To Dig Iris Bulbs

The best time to dig up iris bulbs or rhizomes in the garden is between the last days of summer and early fall. Lift the clump of iris plants from the ground with a spade or fork. Try to lift the entire bulb to ensure the plant survives the move.

How long can iris bulbs be out of the ground?

Now lay the “keeper” rhizomes aside in a shaded location, a garage or cool shed is a good storage area, while the planting beds or plant- ing holes are readied. It will not damage the prepared rhizomes to remain out of the ground for two weeks.

Can iris bulbs be dug up and stored?

Proper iris rhizomes storage starts with making sure that the iris rhizomes have been properly dried. After digging them up, trim the leaves back to about 3 to 4 inches (7.5 to 10 cm.) long. The next step in preparing iris rhizomes for storage is to place them in a dark, dry, somewhat cool place to further dry or cure.

What time of year do you move irises?

The best time to plant and transplant rhizomatous iris is late July through September. Iris loves the heat and drier weather of summer and the summer dividing will reduce the incidence of bacterial soft rot. Most rhizomatous iris should be divided every three to five years.

Should you dig up iris bulbs?

If the damage is too great on the iris, you should dig it up to prevent the plant from infecting the rest of your flower bed. Because fungal spores quickly spread through the wind, make sure that you remove any leaves or flower buds with the disease from the area.

Can you let iris bulbs dry out?

Placing them in the sun allows them to be dried without excessive damage, as is the case with artificial heating. If it isn’t sunny on the days that you’re storing them, then you should place them near a window and continue drying them for about three to four days.

Can you dig up iris bulbs in the summer?

The best time to dig up iris bulbs or rhizomes in the garden is between the last days of summer and early fall. Lift the clump of iris plants from the ground with a spade or fork. Try to lift the entire bulb to ensure the plant survives the move.

Can I transplant my irises in the spring?

A: August or September is the best time to divide and transplant irises, but you still can transplant them now. Your irises may not bloom this spring. Start dividing them by removing the entire iris clump.

When can I move iris rhizomes?

Mid- to late-summer is a good time to divide bearded irises. You want to make sure that the roots have ample time to grow before winter. You can usually tell that your irises are ready to be divided when a clump looks overgrown, with rhizomes starting to grow into each other and popping up from the soil.

Can you transplant iris?

Transplanting iris successfully requires you to cut or break the small rhizomes away from the larger mother. Discard the mother; do not compost due to various iris pests and diseases that could survive in the rhizome. Trim the leaves back to 8 inches before transplanting iris.

Will iris bloom after transplanting?

Plant bearded irises: Irises may take a season or two to rebloom after transplanting.

Can I move iris in winter?

October is a little late for transplanting iris but if the weather remains seasonably warm, you should be OK. Ideally, you should transplant them after blooming, from summer into fall.

When should iris leaves be cut back?

In mid summer, when the plants begin to look ratty, cut all the foliage down by half to create “fans” of leaves. Always cut at an angle. At the end of the growing season, after the leaves have been killed by a few fall frosts, completely remove all foliage. Most of iris diseases overwinter on the leaf debris.

How long do bulbs last unplanted?

Most bulbs, if stored correctly, can be kept for about 12 months before needing to be planted. The longevity of flowering bulbs is largely determined by the adequacy of the storage provided.

Why are my iris bulbs coming out of the ground?

Bulbs and Soil Conditions One reason you may see bulbs coming out of the ground is improper site condition. Soil for bulbs needs to be rich and organic, well worked, and free draining. Bulbs will rot in boggy soil, and they have difficulty growing up through hard pan or heavy clay.

How many iris bulbs can you plant together?

When replanting a particular Iris that I have divided I like to plant three rhizomes together. That gives me a spectacular mass of blooms in Spring. What is this? Plant them with the pointy nose of the rhizomes facing each other in a circle.

How deep should iris be planted?

But how deep do you plant iris bulbs exactly? Plant the bulbs in holes 4” deep and 2” – 4” apart; for larger groups, dig out a trench, position the bulbs, then replace the soil and water them well.