Virginia Spiderwort
Tradescantia virginianaUSDA | Grow Zone
3-9Outdoors all year in zones 3 to 9. Anywhere colder, keep it as a houseplant. Protect it below 40°F.
- Light
- Partial shade to full sun
- Water
- When top inch is dry
- Humidity
- 40-60%
- Temperature
- 65-75°F (18-24°C)
- Difficulty
- Beginner
- Growth
- Moderate
- Mature size
- 2-3 ft tall, 1-2 ft wide
- Pets
- Non-toxic to pets and children
Virginia Spiderwort, known for its striking blue flowers, is a native perennial that thrives in gardens and landscapes. This hardy plant is appreciated for its resilience and ability to attract pollinators, making it a favorite among gardeners looking to enhance biodiversity.
Ask Vesper about Virginia Spiderwort
Ideal temperature
50-85°F is where it grows fastest. Below 40°F cold damage starts.
Spacing and harvest
- Mature size
- 2-3 ft tall, 1-2 ft wide
- Plant apart
- 12-24 in
- Frost
- Hardy: survives frost
Everything it needs
9 essentials at a glance
Watering
Virginia Spiderwort prefers consistently moist soil but can tolerate short periods of dryness.
Water thoroughly when the top inch of soil feels dry, typically every 1-2 weeks. In the growing season (spring and summer), increase frequency if the plant is in a warm environment. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning leaf tips.
Light
This plant thrives in partial shade to full sun, ideally receiving 4-6 hours of direct sunlight daily.
Too much direct sun can scorch the leaves, while too little light can lead to leggy growth. A location with morning sun and afternoon shade is often ideal.
Soil
Virginia Spiderwort prefers well-draining, loamy soil with a pH range of 6.0 to 7.0.
A potting mix that includes peat moss, perlite, and compost is recommended to ensure good drainage and nutrient availability. Avoid heavy clay soils that retain water.
Humidity
This plant enjoys moderate to high humidity levels, around 40-60%.
To increase humidity, you can mist the leaves regularly or place a humidity tray filled with water and pebbles beneath the pot. Signs of low humidity stress include browning leaf edges and wilting.
Temperature
Virginia Spiderwort thrives in temperatures between 65-75°F (18-24°C) and can tolerate a range from 50-85°F (10-29°C).
It is hardy in zones 3-9, making it suitable for a variety of climates. Protect it from frost and extreme heat.
Fertilizing
Use a balanced liquid fertilizer with an NPK ratio of 10-10-10 or similar, applying every 4-6 weeks during the growing season.
In fall and winter, reduce feeding as the plant enters dormancy. Signs of nutrient deficiency include yellowing leaves and stunted growth.
Pruning
Prune Virginia Spiderwort in early spring to remove any dead or damaged foliage and to encourage bushier growth.
Use clean, sharp scissors or pruning shears. Deadheading spent flowers can also promote further blooming.
Repotting
Repot Virginia Spiderwort every 1-2 years or when it becomes root-bound, indicated by roots growing out of the drainage holes.
Choose a pot 1-2 inches larger in diameter. Gently remove the plant from its old pot, loosen the roots, and place it in fresh potting mix, ensuring the crown is at soil level.
Propagation
Virginia Spiderwort can be propagated through stem cuttings or division.
For stem cuttings, take a 4-6 inch cutting from a healthy stem, remove the lower leaves, and place it in water or moist soil. Roots will develop in 2-4 weeks. Division should be done in spring when the plant is actively growing, carefully separating the root ball into sections with roots and foliage.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or poor drainage.
How to fix it
Allow the soil to dry out before watering again, and ensure the pot has adequate drainage holes.
Wilting leaves
Why it happens
Under-watering or low humidity.
How to fix it
Check the soil moisture and water thoroughly, and increase humidity if necessary.
Leggy growth
Why it happens
Insufficient light.
How to fix it
Move the plant to a brighter location where it can receive more sunlight.
Brown leaf tips
Why it happens
Low humidity or inconsistent watering.
How to fix it
Increase humidity levels and ensure consistent watering practices.
Root rot
Why it happens
Persistent over-watering and poor drainage.
How to fix it
Remove the plant from the pot, trim away any rotten roots, and repot in fresh, well-draining soil.
Care through the year
Spring
In spring, focus on pruning dead or damaged leaves and fertilizing the plant to encourage new growth. Check for pests and ensure adequate watering as temperatures rise.
Summer
During summer, keep the soil consistently moist and provide partial shade during the hottest part of the day. Monitor humidity levels and mist the plant if necessary.
Fall
In fall, reduce watering as the plant prepares for dormancy. Continue to monitor for pests and remove any spent flowers to encourage a tidy appearance.
Winter
In winter, limit watering and avoid fertilizing as the plant enters dormancy. Keep it in a cool, well-lit area away from drafts.
Toxicity & Safety
Virginia Spiderwort is non-toxic to pets and children. However, ingestion of large quantities may cause mild stomach upset. It's always best to keep plants out of reach of curious pets.
Good to know
Why are my Virginia Spiderwort leaves turning yellow?
Yellow leaves on Virginia Spiderwort can indicate over-watering or poor drainage. Ensure the soil dries out between waterings and check for drainage issues.
How often should I water my Virginia Spiderwort?
Water your Virginia Spiderwort every 1-2 weeks, allowing the top inch of soil to dry out before watering again. Adjust frequency based on environmental conditions.
What light conditions are best for Virginia Spiderwort?
Virginia Spiderwort thrives in partial shade to full sun, ideally receiving 4-6 hours of sunlight daily. Morning sun with afternoon shade is often ideal.
How can I propagate Virginia Spiderwort?
You can propagate Virginia Spiderwort through stem cuttings or division. For cuttings, take a healthy stem, remove lower leaves, and place it in water or soil until roots develop.
What should I do if my Virginia Spiderwort is wilting?
Wilting leaves may indicate under-watering or low humidity. Check the soil moisture and water thoroughly, and consider increasing humidity around the plant.
When should I repot my Virginia Spiderwort?
Repot your Virginia Spiderwort every 1-2 years or when it becomes root-bound. Look for roots growing out of the drainage holes as a sign it needs repotting.
Is Virginia Spiderwort toxic to pets?
No, Virginia Spiderwort is non-toxic to pets and children, making it a safe choice for households with animals.
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