Also known as Rush · 599 saves
Juncus
Juncus, the genus most gardeners know as rush. We track 13 varieties; the ones most used by real gardeners.
The 13 most-saved Juncus varieties
Species of Juncus
Each one is a parent of the varieties above.
Track your Juncus in Sow
Save the Juncus you grow and get care reminders timed to your zone.
How to grow Juncus
Whats common across all Juncus varieties in our catalog — drawn from the care records of the 13 most-grown of them.
The Juncus year
- DivideMarch and April100% of varieties
Divide congested clumps every 3-5 years to maintain vigor.
- Spring CleanupFebruary and March62% of varieties
Cut back old, brown stems close to the ground before new growth emerges.
- PlantMarch, April and September46% of varieties
Plant in consistently wet soil or submerged up to 4 inches deep.
- PruneFebruary46% of varieties
Comb or pull out dead stems in early spring; the clump is evergreen and should not be cut to the ground.
Do
- Water regularly to keep soil moist 🌱
- Divide clumps every few years
- Keep soil consistently moist 🌱
- Mulch to conserve moisture
- Allow it to self-seed if you want it to naturalize.
Avoid
- Avoid letting soil dry out completely ❌
- Allow soil to dry out completely ❌
- Refrain from over-fertilizing
- Use heavy fertilization, which can promote disease
What goes wrong with Juncus
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Sticky residue and distorted leaves | Spray with insecticidal soap |
| Generally pest-free | No significant insect damage is typical | Monitor only; no routine treatment needed |
| Spider mites | Fine webbing and speckled leaves | Spray with insecticidal soap or horticultural oil |
| None | Extremely resistant to pests. | No action needed. |
| Root rot | Wilting and yellowing leaves | Improve drainage and reduce watering |
| Generally disease-free | No significant disease issues reported | Maintain wet conditions and reasonable air movement |
| None | Extremely resistant to diseases. | No action needed. |
Making more Juncus
Division
- Dig up mature clump in early spring
- Separate into smaller sections with roots attached
- Plant divisions immediately in moist soil
- Water thoroughly and mulch
Seed
- Scatter seeds on moist soil surface in early spring.
- Press lightly into soil without covering.
- Keep soil moist until germination, about 2-3 weeks.
- Thin seedlings to prevent overcrowding.
Juncus questions
How many types of Juncus are there?
The Sow catalog tracks 13 distinct Juncus varieties. The most popular — ranked by 599 real gardeners — are shown first above.
What zones does Juncus grow in?
Across its varieties, Juncus covers USDA Zones 4–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Juncus bloom?
Most Juncus varieties bloom in summer, early summer, mid-summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Juncus should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.