Technical Specifications
| Feature | Botanical / Cultural Detail |
|---|---|
| Botanical Name | Tridens flavus |
| Common Names | Purpletop Tridens, Purple Top, Greasegrass, Tall Redtop |
| Seed Count | 6,000 seeds |
| Plant Type | Native warm-season perennial bunchgrass |
| USDA Hardiness Zones | Zones 4–9 |
| Sunlight Need | Full sun to light shade |
| Water Requirement | Low — high drought tolerance once established |
| Soil Preference | Dry to average, well-draining, lean soil (no fertilizer needed) |
| Height / Spread | 3–5 ft (0.9–1.5 m) tall / clumping, 1–2 ft (30–60 cm) wide |
| Bloom / Seed Head | Purple seed heads, August–October (bronze in winter) |
| Germination Time | 2–4 weeks; surface-sow, needs light |
Native Grass with Glowing Autumn Color
Purpletop Tridens (Tridens flavus) — also called greasegrass or purple top — earns its name from those airy purple seed heads that catch September light like nothing else in a meadow. A native warm-season bunchgrass, it forms tidy, non-aggressive clumps, turns bronze for winter interest, and feeds birds while providing cover for wildlife. Tough, drought-tolerant, and deer-resistant, it thrives on lean, dry ground where fussier plants struggle — a workhorse for prairie restoration and naturalistic landscapes.
Key Highlights & Benefits
- Striking Fall Color: Shimmering purple seed heads from late summer into autumn.
- Winter Interest: Seed heads turn bronze and stand through winter.
- Tough & Drought-Tolerant: Thrives in lean, dry soil with minimal care.
- Deer-Resistant & Wildlife-Friendly: Seeds feed birds; clumps provide cover.
- Well-Behaved: Clumping habit — a non-aggressive spreader.
Master Sowing & Growing Guide
1. Timing & Location
- When: Sow in fall or early spring. Fall sowing benefits from natural cold exposure.
- Location: Full sun to light shade in dry to average, well-draining soil. No fertilizer — native grasses thrive in lean soil.
2. Sowing Method
- Surface Sow: Seeds need light — broadcast and press lightly for good seed-to-soil contact; do not bury.
- Stratification: Optional cold-moist stratification improves germination. Keep moist until established; expect 2–4 weeks.
3. Establishment & Maintenance
- Keep evenly moist until established, then it becomes highly drought-tolerant.
- Allow to naturalize with minimal maintenance. Leave seed heads for wildlife and winter interest.
- Cut back dead foliage in late winter before new growth appears.
Landscape & Wildlife Applications
- Prairie & Meadow Restoration: A native anchor grass for naturalized plantings.
- Erosion Control: Deep-rooted clumps stabilize slopes and disturbed ground.
- Ornamental Grass Gardens: Graceful purple seed heads sway in the breeze.
- Wildlife Habitat: Food for birds and cover for beneficial insects and ground-nesters.
Common Growing Problems & Solutions
- Poor / Slow Germination: Cause: buried seed or no cold exposure. Fix: surface-sow with light; try fall sowing or cold-stratify.
- Weak, Floppy Growth: Cause: rich soil or too much water. Fix: grow lean and dry — no fertilizer needed.
- Slow Establishment: Cause: warm-season grasses start slowly. Fix: keep moist the first season; drought tolerance builds once established.
Frequently Asked Questions
How many seeds are included?
This listing includes 6,000 Purpletop Tridens (Tridens flavus) seeds.
When should I sow the seeds?
Sow in fall or early spring. Surface-sow (the seeds need light), and fall sowing benefits from natural cold that improves germination.
Is it invasive or aggressive?
No — it’s a clumping bunchgrass and a well-behaved, non-aggressive spreader, ideal for naturalized plantings.
Does it need much water or fertilizer?
Very little. Once established it’s highly drought-tolerant, and it prefers lean soil — no fertilizer needed.
Storage & Quality Assurance
- Seed Freshness: Packed to maintain viability and germination rates.
- Storage Instructions: Store unused seed in a cool, dry, sealed place; refrigeration extends viability 2–3+ years.
- Package Includes: 6,000 Purpletop Tridens (Tridens flavus) seeds.
