Woolly Hedgenettle
Stachys byzantinaUSDA | Grow Zone
4-8Outdoors all year in zones 4 to 8. Anywhere colder, keep it as a houseplant. Protect it below 32°F.
- Light
- Full sun to partial shade
- Water
- Every 1-2 weeks
- Humidity
- 40-60%
- Temperature
- 60-75°F
- Difficulty
- Beginner
- Growth
- Moderate
- Mature size
- 12-18 in tall, 18-24 in wide
Woolly Hedgenettle, known for its soft, fuzzy leaves, is a charming perennial native to Europe and Asia. This low-maintenance plant is prized for its drought tolerance and attractive foliage, making it a popular choice for gardens and landscapes.
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Ideal temperature
60-75°F is where it grows fastest. Below 32°F cold damage starts.
Spacing and harvest
- Mature size
- 12-18 in tall, 18-24 in wide
- Plant apart
- 18-24 in
- Frost
- Half hardy: light frost only
Everything it needs
9 essentials at a glance
Watering
Woolly Hedgenettle prefers well-drained soil and should be watered moderately.
Water every 1-2 weeks, allowing the top inch of soil to dry out between waterings. During hot summer months, increase frequency as needed. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning leaf edges.
Light
This plant thrives in full sun to partial shade, ideally receiving 6-8 hours of sunlight daily.
It can tolerate some shade, especially in hotter climates, but too much shade may lead to leggy growth. Ensure it is placed where it can receive morning sun for optimal growth.
Soil
Woolly Hedgenettle prefers well-draining soil with a pH range of 6.0 to 7.0.
A sandy or loamy potting mix is ideal, and adding organic matter can improve drainage. Ensure the pot or garden bed has good drainage to prevent waterlogging.
Humidity
This plant is quite adaptable and prefers moderate humidity levels, around 40-60%.
To increase humidity, mist the leaves or place a humidity tray nearby. Signs of low humidity stress include browning leaf tips and leaf drop.
Temperature
Woolly Hedgenettle thrives in temperatures between 60-75°F (15-24°C) and is hardy in USDA zones 4-8.
It can tolerate light frost but should be protected from extreme heat. During winter, it can survive colder temperatures but may die back.
Fertilizing
Use a balanced, slow-release fertilizer with an NPK ratio of 10-10-10, applying it in early spring.
Fertilize every 6-8 weeks during the growing season. Signs of nutrient deficiency include stunted growth and pale leaves.
Pruning
Prune Woolly Hedgenettle in late winter or early spring before new growth begins.
Use clean, sharp pruning shears to remove any dead or damaged stems. Deadheading spent flowers can encourage more blooms and maintain a tidy appearance.
Repotting
Repot every 2-3 years or when the plant becomes root-bound.
Choose a pot that is 1-2 inches larger in diameter than the current one. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. To repot, gently remove the plant from its pot, loosen the roots, and place it in fresh potting mix.
Propagation
Propagation can be done through division or seeds.
For division, carefully dig up the plant in spring or fall, separating the root clumps and replanting them. For seeds, sow them in early spring, covering lightly with soil and keeping moist until germination.
When it's unhappy
Yellow leaves
Why it happens
This can be caused by over-watering or nutrient deficiency.
How to fix it
Reduce watering frequency and check for proper drainage. Fertilize if nutrient deficiency is suspected.
Leggy growth
Why it happens
Insufficient light can lead to leggy growth.
How to fix it
Move the plant to a sunnier location to encourage compact growth.
Root rot
Why it happens
Over-watering and poor drainage are the main causes.
How to fix it
Allow the soil to dry out and improve drainage. Remove any affected roots.
Browning leaf tips
Why it happens
This may indicate low humidity or under-watering.
How to fix it
Increase humidity around the plant and ensure consistent watering.
Pests (aphids, spider mites)
Why it happens
These pests can infest the plant, especially in dry conditions.
How to fix it
Inspect regularly and treat with insecticidal soap or neem oil as needed.
Care through the year
Spring
In spring, prune back any dead stems and fertilize with a balanced fertilizer to encourage new growth. Monitor for pests as new growth emerges.
Summer
During summer, ensure consistent watering, especially in hot weather. Mulch around the base to retain moisture and suppress weeds.
Fall
In fall, cut back the plant after the first frost to tidy up the garden. Consider dividing the plant if it has become too large.
Winter
In winter, protect the plant from extreme cold by mulching around the base. Avoid over-watering as the plant enters dormancy.
Toxicity & Safety
Woolly Hedgenettle is non-toxic to pets and children. It is safe to have around cats and dogs, and ingestion does not cause any known adverse effects.
Good to know
Why are my Woolly Hedgenettle leaves turning yellow?
Yellow leaves can be a sign of over-watering or nutrient deficiency. Ensure you are allowing the soil to dry out between waterings and consider fertilizing if the plant appears to be lacking nutrients.
How often should I water my Woolly Hedgenettle?
Water every 1-2 weeks, allowing the top inch of soil to dry out between waterings. Adjust frequency based on the season and environmental conditions.
What type of soil is best for Woolly Hedgenettle?
Woolly Hedgenettle prefers well-draining soil with a pH of 6.0 to 7.0. A sandy or loamy potting mix is ideal for promoting healthy growth.
Can I propagate Woolly Hedgenettle from cuttings?
Propagation is best done through division or seeds rather than cuttings. Divide the plant in spring or fall for successful propagation.
What pests should I watch for on my Woolly Hedgenettle?
Common pests include aphids and spider mites. Regularly inspect your plant and treat infestations promptly with insecticidal soap or neem oil.
How do I prune Woolly Hedgenettle?
Prune in late winter or early spring before new growth appears. Remove any dead or damaged stems to promote healthy growth and flowering.
Is Woolly Hedgenettle safe for pets?
Yes, Woolly Hedgenettle is non-toxic to both pets and children, making it a safe choice for gardens and homes.
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