White Horehound leaves on white background.
Close-up White Horehound leaves
White Horehound leaves and drops
Horehound Seeds, White
White Horehound growing in garden
White Horehound leaves on white background.
Close-up White Horehound leaves
White Horehound leaves and drops
Horehound Seeds, White
White Horehound growing in garden

Horehound Seeds,
White

4.418 ReviewsSKU: #HB192Min. seed count: 25
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Description

This is the traditional remedy for coughs, having earned its place in the herb garden! Mounds of silvery foliage, around 18 inches tall and somewhat broader, last all season long in most climates. White flowers in season are pretty but not really showy. A must for candy making and flavorful, medicinal tea.

Growing Tips: Plants thrive in full sun and well-drained, rather poor and dry soil. Start plants indoors, barely covering seeds. Keep moist till sprouts appear. Cut back plants in fall to keep compact and productive.

Plant Details

Botanical Name
Marrubium vulgare
Life Cycle
Perennial
Sun Requirement
8–12 hr.
Days to Germinate
14–21
Days to Maturity
70–90
Planting Depth
¼ in.
Plant Spacing
10 in.
Ideal Temperature
65°F
Frost Hardy
Yes

When to Grow

Start White Horehound indoors 4 to 6 weeks before the last frost. Surface sow the seeds and very lightly cover them with a thin layer of soil, keep them moist until germinated, and hold the seedbed at the ideal 68 to 75 F. Be patient, because horehound is quite slow to germinate, taking 14 to 21 days and sometimes more. It is a frost-hardy perennial for Zones 4-9 that flowers in the second year, with roughly 70 to 90 days to maturity.

How to Sow and Plant

  • Seeds germinate in 14-21 days (and sometimes more, as it is quite slow to germinate).
  • Start indoors 4-6 weeks before last frost.
  • Surface sow seeds and very lightly cover with a thin layer of soil.
  • Keep moist until germinated.
  • Ideal germination temperature is 68-75 F.

How to Grow

  • Prefers full sun and rich, well-drained soil.
  • Space plants 10 inches apart.
  • Harvest the leaves just after the plant begins to flower.
  • Keep flowers clipped if you want to prevent reseeding and spreading, otherwise plants will readily reseed and grow aggressively, like other mints.
  • Plants reach 18 inches tall.
  • Do not harvest more than 1/3 of the foliage in the first year.
  • In the second year and thereafter the plants will flower and leaves can be harvested freely.

PESTS/SPECIAL CONSIDERATIONS

  • A fairly pest- and disease-free plant, horehound's weedy behavior is its biggest issue. Clip flowers to keep plants from reseeding or grow in pots.

How to Save Seeds

  • A very hardy perennial, horehound will flower in the second year.
  • Let flowers mature, turn brown, and dry.
  • Cut the stalks before the head shatters and shake seeds into a bag.

FAQ

Why haven't my White Horehound seeds come up yet?

Horehound is quite slow to germinate, taking 14 to 21 days and sometimes more. Surface sow and very lightly cover the seeds, keep them moist until germinated, and hold the temperature at the ideal 68 to 75 F.

Will White Horehound take over my garden?

It can. Plants will readily reseed and grow aggressively, like other mints, so keep flowers clipped if you want to prevent reseeding and spreading, or grow it in pots. Otherwise it is a fairly pest- and disease-free plant, and its weedy behavior is its biggest issue.

When can I harvest White Horehound leaves?

Harvest the leaves just after the plant begins to flower. Do not harvest more than 1/3 of the foliage in the first year; in the second year and thereafter, leaves can be harvested freely. Cut back plants in fall to keep them compact and productive. The mounds of silvery foliage, around 18 inches tall and somewhat broader, last all season long in most climates.
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