trefle.io · Taken Sep 17, 2020 by Dieter Wagner (cc-by-sa)
Lamiaceae
Large-flower hemp-nettle
Galeopsis speciosa
Also known as Galeopsis flavescens, Galeopsis speciosa var. leiotricha, Galeopsis prostrata, Galeopsis unicolor
Native Plants · Edibles & Herbs · Annual · Pollinator · Wildflower · Hemp Nettle · Lamiaceae · Hedgerow · Bumblebee Plant · Self-Seeding · European Native · Cottage Garden
Large-flower hemp-nettle is a robust annual or short-lived perennial herb bearing showy pale yellow and purple flowers that are highly attractive to bumblebees and other pollinators. It grows readily in disturbed ground, hedgerows, and garden borders in full sun to partial shade, thriving in average to moist soils with little need for feeding. Sow seeds in spring directly where you want them to grow and deadhead spent flowers to prevent excessive self-seeding.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately during dry spells; avoid prolonged waterlogging but tolerates moist soils · Every 7-10 days; largely rain-fed in temperate gardens
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5.5–6.5
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed, Cutting, Division
Hardiness
USDA 4b-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Alberta, Altay, Amur, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Rus, Czechoslovakia, Denmark, East European Russia, Finland, France, Germany, Great Britain, Greece, Hungary, Ireland
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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