‘Black Knight’ Hollyhock


‘Black Knight’ Hollyhock

Alcea rosea 5-6' tall.

A single dusky midnight-purple beauty with a watchful yellow eye.

Hollyhocks produce towering spires covered with flowers for extended bloom from June to October. ‘Black Knight’ is a first-year-flowering cultivar, a single from the Spotlight Series, and is truly perennial, not biennial like most Alceas on the market. Cut back to 12" after flowering has finished to encourage root growth.

Plant 12" apart in moist well-drained soil. Z3. (3½" plug stock)

681 ‘Black Knight’
Item Discounted
L681A: 1 for $5.50
New catalog listings coming in early October
L681B: 3 for $14.00
New catalog listings coming in early October
L681C: 6 for $25.00
New catalog listings coming in early October
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Additional Information


Helena Rutherford Ely says in her 1903 book A Woman’s Hardy Garden, “No one can have too many hollyhocks. Plant them at the back of the border, among shrubbery, along fences, and in good clumps in any odd corner, or around buildings; they are never amiss, and always beautiful.” Z3.

Herbaceous Perennial Plants

When you receive your order, open the bags and check the stock. Roots and crowns should be firm and pliable. Generally, a little surface mold is harmless and will not affect the plant’s future performance. If they are slightly dry, add a little water or, if they are going to be planted or potted up soon, wet the roots. If you do not plant or pot them up immediately, store them in a cool (35–40°) location for a short time.

Do not plant bare-root perennial plant crowns directly outdoors before danger of frost has passed. Wet and/or cold conditions for an extended period may cause rotting.

Pot up rootstock using well-drained potting mix in a deep 6" pot or a 1-gallon container. Avoid coiling the roots in under-sized containers.
Grow newly potted perennials for a few weeks in a protected location in indirect light at 50–60°.
Transplant outside once they show some top growth and the danger of frost has passed.

For more info:
About planting bare-root perennials.