Asked by: Fatou Dikarev
home and garden landscaping

Do hollyhocks self seed UK?

Last Updated: 4th May, 2020

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Hollyhocks self-sow, so once you have introduced them they should spring up of their own volition, but they will creep to the sunny, open front of the bed. Hollyhocks no longer quite fit their let-them-get-on-with-it cottage garden image. But if you give them care and attention, they are worth it come July.

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Keeping this in consideration, how do you get seeds from hollyhocks?

To harvest hollyhock seeds, simply snap the hollyhock seed pods off the stalks with your fingers, dropping them into a brown paper bag. (If you want to sow them instead of saving them, autumn is also the ideal time for that.

Likewise, how do you plant hollyhock seeds UK? Sow hollyhock seeds outdoors just beneath the surface of the soil 1-2 weeks before last frost. Seeds will germinate in 10-14 days. Thin to 18-36 inches apart after seedlings have sprouted.

Hereof, do hollyhocks come true from seed?

Press seeds into the soil and cover lightly with soil, if at all. When seedlings are up and established, thin each group to one plant so it has room to grow. Hollyhocks are open pollinated and will usually come true from seed, although wonderful variations can always surprise you the following year.

Should you soak hollyhock seeds?

When to Soak Hollyhock Seeds Giving hollyhock seeds a water treatment is a good idea if you're using store-bought seed or seed that you've collected, dried, and stored. If you sow them by breaking and scattering dried seed pods outdoors at the end of the growing season, there's no need to soak the seed beforehand.

Related Question Answers

Dikra Derk

Professional

Should you deadhead hollyhocks?

Deadheading. Hollyhock blooms from the bottom up. Stalks should be pruned off, or deadheaded, when there are more seed pods than flowers and buds. Deadheading down to a lateral bud stimulates more bloom and prevents the biennial from going to seed, encouraging it to grow for another season.

Bhajan Hauk

Professional

Do hollyhocks self seed?

Hollyhocks self-sow, so once you have introduced them they should spring up of their own volition, but they will creep to the sunny, open front of the bed. Dig up self-sown seedlings and pot them into a 3in pot.

Baye Nizhinsky

Explainer

Are hollyhocks poisonous?

Unfortunately, they can cause dermatitis in both pets and people when touched, warns "Poisonous Plants of California." Hollyhocks can trigger either contact dermatitis or allergic dermatitis, which can result in redness and itching of the skin and irritation of the mouth if eaten.

Leize Baudouin

Explainer

Can you take cuttings from hollyhocks?

Cut a 3- to 4-inch length of healthy root from the hollyhock with a sharp knife or scissors; the end closest to the root ball should be cut straight across. The root should be 1/4 inch wide or larger. Avoid any blackened roots; the dark color indicates they are dead or dying.

Bustar Huergo

Explainer

Can hollyhocks grow in pots?

Any small plant container will do, but plastic “peat pots” filled with perlite, vermiculite, and peat moss are ideal for this. Place the trays near a window where they'll receive ample sunlight. Water the soil as needed to keep it moist. Hollyhock seeds usually germinate in 1 to 2 weeks.

Yave Quelo

Pundit

Can I move hollyhocks?

If you need to transplant a larger hollyhock plant, move it when it is not blooming, in the fall or winter. Gently pull out or dig up the plants and place them in a bucket of water until you transplant them. Plant them in a sunny location, and make sure the roots are completely covered when you plant them.

Falgas Kiehnlein

Pundit

Do you cut down hollyhocks after flowering?

Pruning: Hollyhock flowers can be removed when they fade and stalks can be cut back after flowering. This will prevent seed heads from forming and reseeding. Although, if you'd like to have seeds set for next spring, leave the flowers and a few stalks until the seeds have dropped.

Atanasio Lepe

Pundit

How do you prepare hollyhocks for winter?

A haircut is the first step to preparing hollyhock for winter. Prune the leaves and stems back to 6 inches from the ground in fall. The hollyhocks then need a layer of organic material over the root zone to protect them from freezing. Use straw, compost, leaf litter or mulch.

Huria Taibner

Pundit

Can you grow hollyhocks in pots UK?

Hollyhocks (Alcea rosea) may be annuals, perennials or biennials, depending on the cultivar. While full-size hollyhocks that reach heights of 6 feet or more and form large roots aren't recommended for containers, dwarf varieties often perform well in containers.

Cleta Eysen

Teacher

How do you keep hollyhocks blooming?

Cut plants down to new basal foliage in late summer when flowering is completed. Remove all the old flowering stems and the old, ragged basal leaves. The new foliage is more attractive at this point and holds up well through the winter, remaining semi-evergreen in areas with mild winters.

Aderita Terglane

Teacher

Edin Grunwoldt

Teacher

When can I move hollyhocks UK?

The soil should be kept moist, and the seeds will come up after 10 days. They take a bit longer when they're planted outdoors. The seedlings shouldn't be transplanted until they have at least four leaves and not until the air temperature outside is at least 50 degrees F.

Pompiliu Boira

Teacher

Why are the leaves on my hollyhocks turning yellow?

Yellow leaves can be caused by many things including lack of nitrogen, insufficient light, water-logged soil (plant roots need oxygen to thrive), dry soil, or iron deficiency. If the older bottom leaves are yellow, but new growth is green, it's usually a lack of nitrogen.

J Paladines

Reviewer

Do hollyhocks need staking?

If planted in rows, space rows at least 3 feet apart. Depending on how hollyhock grow in your area, some plants may require staking to support fragile stems in windy areas. MOISTURE REQUIREMENTS: Will tolerate moist conditions if soil is welldrained.

Estelia Lizugnaga

Reviewer

Why are my hollyhocks dying?

Disease cycle of hollyhock rust
Wet conditions promote infection by the rust fungus. The lower leaves typically show symptoms first, and the disease slowly progresses to upper leaves over the summer. Infected leaves eventually turn brown, wilt, and die.

Ragnhild Viranovsky

Reviewer

What animal eats hollyhocks?

While many insects find the leaves to be quite tasty, the two that are most common are the hollyhock weevil (Apion longisrostre), and the larvae of the sawfly.

Divya Lethbridge

Reviewer

Do slugs eat hollyhocks?

Hollyhocks are favored by slugs, cutworms, and leaf eating insects. You need to know which you have to know what to do. The slugs (or snails) usually leave roundish holes in the middles of leaves. You will never see a slug in the daytime, but come out a few hours after dark with a flashlight and look for culprits.

Salvacion Kobusch

Supporter

Why are my hollyhocks not blooming?

They are very susceptible to the disease, rust, and they usually need to be staked. Why didn't my hollyhock bloom this year? Hollyhocks do not usually bloom the first year from seed unless it is sown early. They also self-sow and the first year the seedlings will not bloom.

Mamoudou De Aguirre

Supporter

Are hollyhocks invasive?

Hollyhock mallow is recommended for U.S. Department of Agriculture plant hardiness zones 4 through 10. Although it is not considered invasive, other Malva species can become weedy and potentially invasive in some areas, so be certain you are purchasing plants or seeds for the desired species.