Double Carnival Rosy Red Hollyhock growing in garden.
Hollyhock Seeds, Double Carnival Rosy Red
Double Carnival Rosy Red Hollyhock bud with pollinator.
Hollyhock Seeds, Double Carnival Rosy Red
Hollyhock Seeds, Double Carnival Rosy Red
Double Carnival Rosy Red Hollyhock growing in garden.
Hollyhock Seeds, Double Carnival Rosy Red
Double Carnival Rosy Red Hollyhock bud with pollinator.
Hollyhock Seeds, Double Carnival Rosy Red
Hollyhock Seeds, Double Carnival Rosy Red

Hollyhock Seeds,
Double Carnival Rosy Red

43 ReviewsSKU: #FL192Min. seed count: 35
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Description

Annual or Biennial. Fantastic, showy 3" to 4" blooms are of deep rose. This one is superb in massed plantings, or as an accent plant, adding height and structure to the garden lay-out. Plants reach 6-7' in height and really crank out the color all season long!

Growing Tips: Direct sow in the spring or sow in containers to transplant in spring. Sow seeds up to 1/2 inch deep and keep soil moist. Prefers full sun.

Plant Details

Botanical Name
Alcea rosea
Life Cycle
Annual or biennial
Sun Requirement
Full sun
Days to Germinate
10–14
Planting Depth
¼ in.
Plant Spacing
12 in.
Ideal Temperature
65–90°F
Frost Hardy
Yes

When to Grow

Direct sow Double Carnival Rosy Red in spring, or start it in containers and transplant out in spring. Set the seed just 1/4 inch deep because light aids germination, and keep the soil from drying out; seedlings appear in 10 to 14 days. Give plants full sun; moist, rich, well-drained soil; and 12 inches of space. Good air circulation is the main defense against rust. Provide staking for the tall flower spikes; plants reach 6 to 7 feet, and tall hollyhock plants can be easily blown over in high winds.

How to Sow and Plant

  • Seeds germinate in 10 to 14 days.
  • Direct sow seeds just 1/8-1/4 inch deep, as light aids germination, but seeds do not like to dry out.

How to Grow

  • Plants prefer full sun to part shade.
  • They require moist, rich, well-drained soil.
  • Space plants about 24 inches apart and provide staking for the tall flower spikes.
  • Cut down spent flower spikes to improve the health and longevity of the plant.

PESTS/SPECIAL CONSIDERATIONS

  • Hollyhock is a fairly care-free flower, but rust is a common issue. It can be avoided by providing good air circulation to the foliage and watering the base of the plants rather than the leaves.
  • The tall plants can be easily blown over in high winds. Position the planting area to protect against strong gales, such as close to the side of a building, or just provide some staking.

How to Save Seeds

  • Allow flowerheads to turn brown and dry on plants.
  • Clip the heads and dry the seeds, placing them in a brown paper bag for a week in a dark, dry place.
  • Store seeds in a cool, dark, dry place over winter.

FAQ

How tall does Double Carnival Rosy Red get?

Plants reach 6 to 7 feet in height. Tall hollyhocks can be easily blown over in high winds, so stake them or site them where something, such as the side of a building, breaks strong gales.

What do Double Carnival Rosy Red blooms look like and where should I use them?

The showy 3- to 4-inch blooms are a deep rose, and the plants really crank out color all season long. This one is superb in massed plantings or as an accent plant, adding height and structure to the garden layout.

How can I prevent rust on Double Carnival Rosy Red hollyhocks?

Rust is the common issue with an otherwise care-free flower. It can be avoided by providing good air circulation to the foliage and watering the base of the plants rather than the leaves.

Customer reviews

4 / 5 3 Reviews

What gardeners are saying

  • Big, bright blooms: Large, bright, showy flowers once the buds open.

  • Tall, wide plants: Stalks grow tall and the plants spread, so give them room.

  • Worth the wait: Buds take a while to open, then put on a show.

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