Common Hemp-nettle
Galeopsis tetrahit
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Description
Common Hemp-nettle (Galeopsis tetrahit) is an annual herbaceous plant in the Lamiaceae family, characterized by its square stems and hairy leaves. It typically reaches up to 1 meter in height and produces pink to purple flowers with a distinctive white or yellow spot on the lower lip. As a pioneer species, it is valuable in regenerative agriculture for its ability to colonize disturbed soils, aiding in soil stabilization and improving soil structure. This plant supports biodiversity by attracting pollinators such as bees and beneficial insects. In a food forest, it can serve as a ground cover layer, contributing to soil health and ecosystem resilience. Historically, it has been used in traditional medicine for its anti-inflammatory properties.
Growing Details
Common Hemp-nettle thrives in well-drained soils and can tolerate a range of soil types, including poor soils. It prefers full sun to partial shade. To prepare the soil, incorporate organic matter such as compost to improve fertility. Mulching around the base can help retain moisture and suppress weeds. Companion plants like clover can enhance soil nitrogen levels. Avoid overwatering, as this can lead to root rot. Harvest seeds when they are fully mature and dry them thoroughly before storage in
Tags
Attracts Wildlife
Erosion Preventing
Bee Friendly
Invasive
Meadow
Visual Appeal
Easy Propagating
Range (Based on GBIF Data)
The map shows known occurrence points of <strong>Galeopsis tetrahit</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Native to Europe and Asia, but widely natural
applicable geo region: Temperate regions
language used: en
Flowering:
middle
of Jun for 90 days
Harvest:
middle
of August for 60 days
Seed Start:
beginning
of April
Indoor Start:
Transplant:
Uses & Benefits
Edible Rating:
(1/5)
edible uses: The seeds of Common Hemp-nettle can be consumed, though they are not a common food source. They can be eaten raw or cooked, but due to their small size and low yield, they are not widely harvested for food.
Medicinal Rating:
(2/5)
medicinal uses: Traditionally, Common Hemp-nettle has been used in herbal medicine for its anti-inflammatory properties. It has been employed in the treatment of respiratory issues and skin conditions. However, its use is not widespread in modern herbal practices, and caution is advised due to potential skin irritation.
health concerns: Some parts of the plant may cause skin irritation in sensitive individuals. It is advisable to handle the plant with care and test for sensitivity before extensive use.
other uses: Common Hemp-nettle can be used as a green manure to improve soil fertility and structure.
Scientific Literature
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Botanical data
specie: Galeopsis tetrahit
common names: Common Hemp-nettle; Brittle-stemmed Hemp-nett
family: Lamiaceae
sub family:
tribe:
sub tribe:
genus: Galeopsis
Growing Conditions
area needed: 0.1 m
spacing: 0.3 m
growing difficulty: Low
Deciduous / Evergreen: Evergreen
Seed Temp (Opt/Min/Max): 20ยฐC / 10ยฐC / 30ยฐC
Plant Temp (Opt/Min/Max): 18ยฐC / 5ยฐC / 30ยฐC
water demands: Medium
humidity: Medium
light demands: High
root type: Shallow
frost tender: Medium
hardness:
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(4/10)
first harvest: 0 years
life span: 1 years
succession: Pioneer
growth rate: Fast
max height: 1.0 m
max width: 0.3 m
soil preference:
Medium (Loam)
pH preference:
Neutral
flower type:
Hermaphrodite
growth details: Common Hemp-nettle thrives in well-drained soils and can tolerate a range of soil types, including poor soils. It prefers full sun to partial shade. To prepare the soil, incorporate organic matter such as compost to improve fertility. Mulching around the base can help retain moisture and suppress weeds. Companion plants like clover can enhance soil nitrogen levels. Avoid overwatering, as this can lead to root rot. Harvest seeds when they are fully mature and dry them thoroughly before storage in
Potential Disturbances: Common pests include aphids and spider mites. Introduce beneficial insects such as ladybugs and lacewings to control aphid populations. Planting companion plants like marigolds can help repel pests. Use neem oil or garlic spray as organic pest control methods.
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