Heirloom

Fire King

Scabiosa atropurpurea

Photo: Roger Culos · Wikimedia Commons · (CC BY-SA 3.0)

1 1/2-2 1/2", deep scarlet flowers stand tall on strong, slender stems. A dramatic addition to any bouquet or garden. Also known as mourningbride.

Harvest

90-100d

Days to harvest

📅

Sun

Full sun

☀️

Zones

4–11

USDA hardiness

🗺️

Height

2-3 feet

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Start Indoors

Transplant

Direct Sow

Start Indoors

Transplant

Direct Sow

Showing dates for Fire King in USDA Zone 7

All Zone 7 flower →

Zone Map

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Fire King · Zones 4–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing12-18 inches

SoilWell-drained loam, tolerates poor soil

WaterRegular, moderate moisture

SeasonWarm season annual

ColorDeep scarlet

Size1 1/2-2 1/2"

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 1	May – June	July – August	July – September	—
Zone 2	April – May	June – July	June – August	—
Zone 11	January – January	January – February	January – March	—
Zone 12	January – January	January – February	January – March	—
Zone 13	January – January	January – February	January – March	—
Zone 3	April – May	June – July	June – August	—
Zone 4	March – April	June – June	June – July	—
Zone 5	March – April	May – June	May – July	—
Zone 6	March – April	May – June	May – July	—
Zone 7	February – March	April – May	April – June	—
Zone 8	February – March	April – May	April – June	—
Zone 9	January – February	March – April	March – May	—
Zone 10	January – January	February – March	February – April	—

Succession Planting

Fire King blooms continuously once it gets going, but each plant slows down after 10-12 weeks of heavy cutting — so staggering sowings is worth doing if you want stems from late spring through hard frost. In zone 7, start a first round indoors in late February, transplant out in mid-April, then direct-sow a second round around June 1. That 6-7 week gap staggers peak bloom by about 5-6 weeks and keeps production up through September.

Stop sowing by late June. Seeds germinating in July won't reliably hit their 90-100 day maturity before cool nights shut things down, and plants started that late tend to produce a handful of weak stems rather than a real flush. The transplanted spring round will carry you into fall on its own.

Complete Growing Guide

1 1/2-2 1/2", deep scarlet flowers stand tall on strong, slender stems. A dramatic addition to any bouquet or garden. Also known as mourningbride. According to Johnny's Selected Seeds, Fire King is 90 - 100 days to maturity, annual, open pollinated. Notable features: Cold Tolerant, Use for Cut Flowers and Bouquets, Attracts Beneficial Insects.

Light: Full sun (6 or more hours of direct sunlight a day). Soil: High Organic Matter, Loam (Silt), Sand. Soil pH: Alkaline (>8.0), Neutral (6.0-8.0). Drainage: Good Drainage. Height: 2 ft. 0 in. - 3 ft. 0 in.. Spread: 0 ft. 9 in. - 1 ft. 0 in.. Spacing: Less than 12 inches. Growth rate: Medium. Maintenance: Low. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

Fire King reaches harvest at 90 - 100 days from sowing per Johnny's Selected Seeds. Expect 1 1/2-2 1/2" at peak. As an annual, harvest continues until frost ends the season.

Bloom time: Fall, Spring, Summer

Storage & Preservation

For fresh storage, keep Fire King stems in a clean vase with cool water (65-75°F) at room temperature or in a cool room away from direct sunlight and ripening fruit. Change water every 2-3 days and trim stems at an angle. Typical vase life is 7-10 days. To dry flowers for long-term preservation, hang bundles upside down in a cool, dark, well-ventilated space for 2-3 weeks until papery. For pressing, place individual blooms between parchment paper weighted under heavy books for 3-4 weeks. Silica gel drying in an airtight container also works well, preserving color within 5-7 days.

History & Origin

Fire King is open-pollinated, meaning seed saved from healthy plants will produce true-to-type offspring. Listed in the Johnny's Selected Seeds catalog.

Origin: Southern Europe, Western Asia and Northern Africa

Advantages

+Deep scarlet blooms create dramatic visual impact in garden arrangements
+Strong, slender stems ideal for cutting and long-lasting bouquets
+90-100 day maturity allows multiple sowings for continuous summer color
+Easy cultivation makes Fire King suitable for beginner gardeners
+Tall growth habit provides excellent height variation in mixed plantings

Considerations

-Scabiosa susceptible to powdery mildew in humid climates without air circulation
-Prefers well-draining soil; poor drainage causes root rot and plant decline
-Extended growing season means late-season bloom potential in short-season regions

Companion Plants

Marigolds (especially Tagetes patula) and Sweet Alyssum are the two I'd prioritize planting within 12 inches of Fire King. French marigolds deter aphids through scent and pull in predatory insects that also go after thrips — both pests that like to work over Scabiosa buds before they open. Sweet Alyssum draws parasitic wasps and hoverflies all season long, and it stays low enough that it won't shade out the base of the plant. Cosmos and Zinnia work well as taller backdrop companions; they share similar water and sun needs without crowding the root zone, and none of these neighbors carry allelopathic concerns. In our zone 7 Georgia garden, I'll run a strip of Lavender along the same border — it handles the summer heat about as well as Fire King does and seems to confuse aphids without any chemical intervention.

Black Walnut is the one to isolate from. Juglone — the compound leaching from walnut roots and decomposing hulls — damages a wide range of ornamentals, and there's no practical workaround if you're within 50-60 feet of an established tree. Fennel causes similar problems through a different mechanism: it releases allelopathic compounds from its roots that suppress neighboring annuals, Scabiosa included. Those two are genuinely worth relocating around, not just separating by a few inches.

Plant Together

Marigolds

Repel nematodes and aphids while attracting beneficial insects

Sweet Alyssum

Attracts beneficial insects and provides ground cover to retain moisture

Nasturtiums

Act as trap crops for aphids and cucumber beetles

Petunias

Repel aphids, tomato hornworms, and other garden pests

Basil

Repels thrips, flies, and mosquitoes while attracting pollinators

Zinnia

Attracts butterflies and beneficial predatory insects

Cosmos

Attracts beneficial insects and provides structural support

Lavender

Repels moths, fleas, and flies with its strong fragrance

Keep Apart

Black Walnut

Produces juglone which is toxic to many flowering plants

Eucalyptus

Releases allelopathic compounds that inhibit growth of nearby plants

Fennel

Inhibits growth of most garden plants through allelopathic root secretions

Pests & Disease Resistance

Common Pests

Aphids, spider mites, thrips

Diseases

Powdery mildew, root rot in poorly drained soil

Troubleshooting Fire King

What you'll see, why it happens, and what to do about it.

White powdery coating on upper leaf surfaces, spreading from older growth first, usually mid-to-late summer

Likely Causes

Powdery mildew (Erysiphe cichoracearum) — favored by warm days, cool nights, and low airflow
Plants crowded closer than 12 inches, trapping humidity around foliage

What to Do

1.Cut out and bag the worst-affected stems; don't compost them
2.Spray remaining foliage with a diluted baking soda solution (1 tablespoon per gallon of water) every 7 days
3.Next season, space plants a full 18 inches apart and don't overhead-water in the evening

Stems collapsing at soil level, roots dark brown and mushy, plant wilts even when soil is wet

Likely Causes

Root rot — typically Pythium or Phytophthora spp. — triggered by waterlogged soil or a bed with no drainage
Planting in heavy clay without amendment, common in Georgia piedmont soils

What to Do

1.Pull the affected plant; there's no saving it once the crown is gone
2.Drench surrounding soil with a copper-based fungicide to slow spread to neighboring plants
3.Amend the bed with 3 inches of compost and coarse sand before replanting, or move Scabiosa to a raised bed

Flower buds deformed or failing to open, sticky residue on stems and leaves, tiny clustered insects visible

Likely Causes

Aphid colonies (commonly Myzus persicae or Macrosiphum euphorbiae) feeding on soft new growth
Thrips (Frankliniella occidentalis) inside the bud before it opens — harder to spot

What to Do

1.Knock aphids off with a firm stream of water from a hose; repeat every 2-3 days for two weeks
2.For thrips inside buds, remove and trash the deformed buds, then apply spinosad spray in the evening when pollinators aren't flying
3.Plant Sweet Alyssum nearby to attract parasitic wasps that prey on aphids

Frequently Asked Questions

How long do Fire King flowers last in a vase?▼

Fire King blooms typically last 7-10 days in fresh water when kept in cool conditions. To extend vase life, change the water every 2-3 days, trim stems at an angle, and keep them away from direct sunlight, heat, and ripening fruit. Remove any lower foliage below the waterline to prevent bacterial growth and maintain freshness.

Is Fire King a good flower for beginners to grow?▼

Yes, Fire King is excellent for beginners. Listed as an easy-to-grow heirloom variety, it requires full sun and basic care with no special expertise needed. It grows quickly, reaching harvest in 90-100 days, and produces abundant dramatic scarlet blooms. Its hardiness and straightforward growing requirements make it ideal for novice gardeners.

Can you grow Fire King flowers in containers?▼

Yes, Fire King can be grown successfully in containers. Use well-draining potting soil and ensure pots have drainage holes. Container-grown plants may need more frequent watering than in-ground plants. Choose a pot at least 12 inches deep and wide enough to accommodate the slender, tall stems. Container gardening also makes it easier to provide consistent full sun exposure.

When should I plant Fire King seeds?▼

Plant Fire King seeds outdoors after the last spring frost date when soil is warm. Direct sow seeds and keep soil moist until germination. In cooler climates, start seeds indoors 6-8 weeks before the last frost for earlier blooms. The variety takes 90-100 days from planting to harvest, so timing based on your local frost date ensures flowers arrive mid to late summer.

What makes Fire King different from other scabiosa varieties?▼

Fire King stands out for its vibrant deep scarlet flower color and notably tall, strong stems ideal for cutting. At 1.5-2.5 inches across, the blooms are dramatic and eye-catching. Its heirloom status and reliable ease of growth, combined with distinctive color, make it a preferred choice for gardeners seeking bold cut flowers or garden impact compared to lighter-colored or shorter varieties.

How do you dry Fire King flowers for arrangements?▼

Hang-dry Fire King flowers by tying stems in loose bundles and suspending them upside down in a cool, dark, well-ventilated space for 2-3 weeks. Alternatively, use silica gel for faster drying in 5-7 days while preserving color better. Pressed flowers work well in crafts—place blooms between parchment paper under heavy books for 3-4 weeks for flat, preserved specimens suitable for framing or scrapbooking.