Fire Star Improved Dianthus
Fire Star Improved Dianthus
Vivid Scarlet Blooms With a Dark Eye
Fire Star Improved Dianthus (Dianthus 'Fire Star Improved') ignites the border with vivid scarlet-red, clove-scented flowers, each marked with a deep ruby eye, over a tidy cushion of blue-green foliage. Blooming heavily in late spring and reblooming through summer, it's tough, drought-tolerant, and deer-resistant, with semi-evergreen foliage. A fiery, fragrant front-of-border favorite for sunny beds and rock gardens in Edina, Woodbury, and Maple Grove.
Fire Star Improved Dianthus Plant Details
| Attribute | Detail |
|---|---|
| Botanical Name | Dianthus 'Fire Star Improved' |
| Mature Size | 6–10 in. tall, 10–12 in. wide |
| Hardiness Zone | 4–9 (Twin Cities is zone 4b–5a — fully hardy) |
| Light | Full sun (6+ hours) |
| Bloom Time | Late spring, reblooming through summer |
| Flower Color | Scarlet-red with a ruby eye, clove-scented |
| Soil | Well-drained; dislikes wet, heavy soil — add grit to clay |
| Winter Hardiness | Reliable to about -25°F; semi-evergreen foliage |
| Deer Resistance | Rarely browsed by deer or rabbits |
Landscape Uses in Minnesota
Fragrant edging and rock gardens: The bold scarlet and neat cushion make a vivid front-of-border edge. Space 10–12 inches apart.
Pollinator and deer-resistant beds: Butterflies visit the fragrant blooms, and deer leave it alone. Pair with catmint, salvia, and sedum.
Best Time to Plant in Minnesota
Plant in spring (late April–May) or early fall. Sharp drainage is essential — avoid wet, heavy soil, especially over winter.
How to Plant Fire Star Improved Dianthus
Dig a hole twice the pot's width at the same depth. Amend heavy clay with grit or coarse sand. Set the crown at or slightly above soil level, backfill, water in, and mulch lightly with grit — keep mulch off the crown to prevent rot. Space 10–12 inches apart.
Watering Fire Star Improved Dianthus
First year: Water every 2–3 days at first, then weekly. Stop 2–3 weeks before the ground freezes.
After year one: Drought-tolerant — water only during extended dry spells. Overwatering and wet soil are its main enemies.
Q: Will it survive a Minnesota winter?
Yes — hardy to about zone 4 with sharp drainage; plant where water doesn't pool over winter.
Q: Is it fragrant?
Yes — the flowers carry the classic sweet, spicy clove scent of pinks.
Q: How do I keep it blooming?
Shear off spent flowers after the first flush to encourage rebloom through summer.
Q: Is it deer-resistant?
Yes — deer and rabbits rarely bother dianthus.
You May Also Like
Passion Dianthus (Dianthus): A deep crimson with the same easy, fragrant nature.
Sedum (Hylotelephium): A drought-tough, deer-resistant partner.
Catmint (Nepeta): Blue spikes that contrast the scarlet blooms.
How Many Fire Star Improved Dianthus Do I Need?
At about 10–12 in. spacing, use this guide for hedges, drifts, and mass plantings:
| Run length | Plants needed |
|---|---|
| 10 ft | 11 plants |
| 20 ft | 22 plants |
| 30 ft | 33 plants |
| 40 ft | 44 plants |
For a fragrant front-of-border ribbon, plant 10–12 in. apart in clusters of 3–5 so the cushions form a continuous edge.
Fire Star Improved Dianthus Season-by-Season in Minnesota
- Spring: The blue-green cushion lights up with scarlet-red, ruby-eyed, clove-scented flowers in late spring.
- Summer: Shear spent blooms for a strong rebloom through the warm months.
- Fall: Cooler weather brings a final light flush of bloom.
- Winter: Semi-evergreen foliage persists under snow, returning quickly in spring.
At a Glance
✔ Pollinator-Friendly ✔ Deer-Resistant ✔ Drought-Tolerant
Plant It With
- Firewitch Dianthus — the ultra-hardy magenta pink for a fragrant edging duo.
- Coral Reef Dianthus — a softer clove-scented pink to blend with the scarlet.
- Autumn Fire Sedum — a drought-tough, deer-resistant late-season partner.
- Bloodstone Sea Thrift — a tidy sharp-drainage companion for sunny edges.
Is Fire Star Improved Dianthus Right for Your Yard?
Fire Star Improved wants full sun and sharp drainage, where it is drought-tolerant and deer-resistant. Not a fit in wet, heavy soil — standing water over winter is its main enemy and leads to crown rot.