when is the best time to plant irises???

Question

in northern ohio?????

Answer 1

Bearded irises can be divided any time after your last frost date in the spring, but the optimal time to divide them is 6-8 weeks after bloom. Avoid transplanting irises in very hot weather (90+ F degrees), but do get them transplanted back into the ground a couple months before freezing weather to give them time to root in well before winter. Irises moved before bloom will often lose their bloom that season, which is why it's best to wait until after bloom to dig and divide.

Japanese and Siberian beardless iris may be divided best in early spring before growth starts. Later divisions during the spring and early summer can be made, but plants are more difficult to establish. Avoid planting back into the same soil if these are Japanese Iris, Iris ensata, as they are allelopathic to all of their own genus, Iris. Renew the soil then plant if you desire another iris in that location.

Answer 2

Fall, just before the frost, is the best time to cut the rhizomes, set them on spaded or broken soil and lightly cover them with manure and topsoil, so the crowns peek out.

Answer 3

Mid-August. RScott

Answer 4

Springtime! Remember: April showers bring May flowers! ;-)

Answer 5

any time as they bloom in the early and late spring. very hearty flowers and plants.