Hybrid

Chantilly™ Bronze

Antirrhinum majus

Wikimedia Commons · (CC BY-SA 4.0)

Harvest

100-110d

Days to harvest

📅

Sun

Full sun to partial shade

☀️

Zones

7–10

USDA hardiness

🗺️

Height

0-3 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 Chantilly™ Bronze in USDA Zone 7

All Zone 7 flower →

Zone Map

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Chantilly™ Bronze · Zones 7–10

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing12-18 inches

SoilWell-draining loam or potting soil, neutral to slightly acidic pH

WaterRegular; consistent moisture, not waterlogged

SeasonWarm season annual

FlavorDistinctly floral with subtle bitterness; delicate and ornamental rather than culinary-forward

ColorSalmon-tangerine

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
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	—
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	—

Succession Planting

Chantilly Bronze takes 100–110 days to first bloom, which makes tight successions impractical — you're not turning these over every two weeks the way you would with lettuce. If you want a longer cut-flower window, start a second tray indoors 3–4 weeks after your first and transplant that batch in May once the earlier wave is established. Daytime highs pushing past 85°F in July will slow bloom production and cause plants to stretch; a staggered second planting carries you through that lull into fall when temps drop back into the 60s and 70s and the plants pick up again.

Once summer heat peaks, don't pull them — cut back by about one-third and let them rest. Chantilly Bronze will often rebound with a solid fall flush from September through first frost, which in zone 7 typically runs late October to mid-November.

Complete Growing Guide

Group 1-2: Performs best under short days and low temperatures. Because Chantilly snapdragons are bred for short-day production, long-day growing conditions produce stems that are thin and weak. We do not recommend this variety for long-day production. Suitable for greenhouse or in the field. Bloom color is salmon/tangerine. Edible Flowers: The flowers are a colorful garnish for use in salads, desserts, and drinks. The flavor is floral and slightly bitter, so use sparingly. According to Johnny's Selected Seeds, Chantilly™ Bronze is 100 - 110 days to maturity, annual, hybrid (f1). Notable features: Greenhouse Performer, Use for Cut Flowers and Bouquets, Edible Flowers, Fragrant.

Light: Full sun (6 or more hours of direct sunlight a day), Partial Shade (Direct sunlight only part of the day, 2-6 hours). Soil: High Organic Matter. Drainage: Good Drainage. Height: 0 ft. 6 in. - 3 ft. 0 in.. Spread: 0 ft. 6 in. - 0 ft. 10 in.. Spacing: Less than 12 inches. Growth rate: Medium. Maintenance: Medium.

Harvesting

Chantilly™ Bronze reaches harvest at 100 - 110 days from sowing per Johnny's Selected Seeds. As an annual, harvest continues until frost ends the season.

A capsule, half hidden by calyx lobes, short-beaked.

Type: Capsule. Length: 1-3 inches.

Storage & Preservation

Fresh cut flowers last 7-10 days in a clean vase with room-temperature water and a floral preservative. Keep stems out of direct sun and change water every 2-3 days, re-cutting 1/4 inch off the base each time. Individual edible flowers are best used fresh the day of harvest but can be refrigerated in a sealed, moisture-controlled container for 1-2 days.

For preservation: Dry flowers by hanging cut stems upside-down in a dark, well-ventilated space for 2-3 weeks—this preserves color and extends shelf life to several months for crafts or potpourri. Edible flowers can be candied by painting petals lightly with egg white, dusting with fine sugar, and drying on parchment at room temperature for 24-48 hours; store in an airtight container. Freezing in ice cubes (place a single flower in each compartment with water) preserves flowers for decorative use in beverages.

History & Origin

Chantilly™ Bronze is an F1 hybrid developed through controlled cross-pollination. Listed in the Johnny's Selected Seeds catalog.

Origin: Southwestern Europe

Advantages

+Attractive salmon/tangerine bloom color adds visual appeal to arrangements
+Edible flowers provide colorful, unique garnish for culinary applications
+Easy difficulty level makes it suitable for beginner growers
+Performs excellently under short-day and cool temperature conditions
+Relatively quick production timeline at 100-110 days

Considerations

-Long-day conditions produce thin, weak stems unsuitable for market
-Not recommended for long-day production regions or seasons
-Floral flavor is slightly bitter, requiring minimal culinary use

Companion Plants

Marigolds and Sweet Alyssum are the most practical neighbors for Chantilly Bronze. Marigolds (especially Tagetes patula) deter aphids through scent and attract predatory insects that clean up whitefly and spider mite populations — both real problems for snapdragons. Sweet Alyssum draws in parasitic wasps and hoverflies that do the same job on a smaller scale, and it fills the 6–8 inches of bare ground at the base of taller snapdragon stems without competing for root space. Nasturtiums act as a trap crop for aphids, pulling pressure away from your snaps before it builds.

Sunflowers are the companion to skip. They produce allelopathic root exudates that can suppress nearby annuals, and snapdragons are sensitive enough that the competition isn't worth it. Black Walnut is a harder stop — juglone toxicity is well-documented, and even soil that previously held walnut roots can knock back shallow-rooted annuals like these. If a walnut is on your property, keep snapdragon beds well outside the drip line.

Plant Together

Marigolds

Repel nematodes, aphids, and whiteflies while attracting beneficial insects

Sweet Alyssum

Attracts beneficial predatory insects like lacewings and provides ground cover

Nasturtiums

Act as trap crops for aphids and cucumber beetles, drawing pests away

Petunias

Repel aphids, tomato hornworms, and squash bugs with natural compounds

Zinnias

Attract beneficial pollinators and predatory insects while providing color contrast

Catmint

Deters ants, aphids, and flea beetles while attracting beneficial bees

Cosmos

Attract parasitic wasps and other beneficial insects that control garden pests

Lavender

Repels moths, fleas, and mosquitoes while attracting pollinators

Keep Apart

Sunflowers

Compete aggressively for nutrients and water, may shade smaller flowers

Black Walnut

Produces juglone toxin that inhibits growth of many flowering plants

Eucalyptus

Allelopathic properties suppress growth of nearby plants through root exudates

Pests & Disease Resistance

Common Pests

Aphids, spider mites, whiteflies

Diseases

Powdery mildew, root rot, rust

Troubleshooting Chantilly™ Bronze

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

White powdery coating on upper leaf surfaces, usually appearing mid-season as plants fill in

Likely Causes

Powdery mildew (Podosphaera xanthii or Erysiphe cichoracearum) — favored by warm days, cool nights, and poor airflow
Overcrowded planting at less than 12 inches apart

What to Do

1.Strip the worst-affected leaves and bin them — don't compost
2.Spray remaining foliage with a dilute potassium bicarbonate solution (1 tablespoon per gallon of water) every 7 days until it clears
3.Next time, space plants the full 18 inches and thin any crossing stems early

Stems collapsing at the soil line, usually in seedlings or recently transplanted starts

Likely Causes

Root rot (Phytophthora or Pythium spp.) triggered by waterlogged soil or pots without drainage
Damping off in seedling trays from overwatering before germination is complete

What to Do

1.Pull the affected plant — it won't recover; check roots for brown, mushy tissue to confirm
2.Let the surrounding soil dry out before watering again; snapdragons want consistent moisture, not standing water
3.In trays, use a sterile, well-draining seed-starting mix and water from the bottom rather than overhead

Small orange or rust-colored pustules on the undersides of leaves, with corresponding yellow spots on top

Likely Causes

Snapdragon rust (Puccinia antirrhini) — a fungal pathogen that spreads via windborne spores and is common on Antirrhinum majus in humid conditions

What to Do

1.Remove and dispose of infected leaves immediately — bag them, don't compost
2.Apply a sulfur-based fungicide every 10–14 days as a preventive once you've seen rust in your garden before
3.Avoid overhead irrigation; water at the base to keep foliage dry

Frequently Asked Questions

Can I grow Chantilly™ Bronze snapdragons outdoors in summer?▼

No. This variety is bred for short-day production and requires cool temperatures (55-65°F nights) and daylengths under 14 hours to produce quality stems. Summer conditions trigger weak, thin growth unsuitable for cutting or display. Plan your growing cycle for autumn through early spring, or use a greenhouse with controlled light to simulate short days year-round.

How long does Chantilly™ Bronze take to flower from seed?▼

Expect 100-110 days from sowing to first harvest-ready blooms. Start seeds indoors 6-8 weeks before your target transplant date, harden off seedlings, and move them to the garden or greenhouse in late summer or early fall for autumn/winter flowering. Cool fall conditions will trigger reliable, prolific blooming.

Is Chantilly™ Bronze good for beginners?▼

Yes, if you garden in the right season and climate. The variety is inherently easy to grow and forgiving of minor mistakes—but only when conditions match its needs (short days, cool temps, consistent moisture). Gardeners in warm regions or those attempting summer cultivation will struggle. Timing and environmental control matter more than horticultural skill.

Can I grow Chantilly™ Bronze snapdragons in containers?▼

Yes. Use a 6-8 inch pot with well-draining potting soil and space plants 12 inches apart. Containers dry faster than ground beds, so monitor moisture carefully and water consistently. Container growing also improves air circulation, reducing disease risk. Place pots in full sun to partial shade and ensure cool nighttime temperatures for best results.

Are Chantilly™ Bronze flowers edible and safe to use in food?▼

Yes, the flowers are edible and safe as a colorful garnish for salads, desserts, and beverages. However, the flavor is distinctly floral with a slight bitter undertone, so use sparingly—a single bloom garnishing a plate or salad is ideal. They are not meant for heavy consumption or as a primary ingredient.

What's the difference between Chantilly™ Bronze and other snapdragon varieties?▼

Chantilly™ Bronze is a Group 1-2 short-day hybrid engineered for commercial greenhouse production in cool seasons, producing sturdy, straight stems with salmon-tangerine blooms. Other varieties may be long-day types (suited to spring/summer), tall heirloom types (requiring staking), or breeding lines optimized for different bloom colors. Chantilly™'s specificity to short-day conditions is its defining trait—and its limitation.