Heirloom

Cranberry Rose

Helichrysum bracteatum

Photo: Lestat (Jan Mehlich) · Wikimedia Commons · (CC BY-SA 3.0)

Tall, well-branched plants produce double flowers 2-2 1/2" across. This variety is also known as Pomegranate or Bright Rose. Also known as bracted strawflower.

Harvest

75-85d

Days to harvest

📅

Sun

Full sun

☀️

Zones

1–11

USDA hardiness

🗺️

Height

24-36 inches

📏

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 Cranberry Rose in USDA Zone 7

All Zone 7 flower →

Zone Map

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Cranberry Rose · Zones 1–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing12-18 inches

SoilWell-drained soil, average to moderate fertility

WaterModerate; drought-tolerant once established

SeasonWarm season annual

ColorCranberry red

Size2-2 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

Start seeds indoors in February or early March, 8-10 weeks before your last frost, then transplant out in April once nighttime lows are reliably above 40°F. For a second wave, direct sow into the bed in late April through early May — they'll be up in 7-14 days and hit bloom just as the transplants start to wind down. Don't push a third sowing past June; seeds started in Georgia's peak summer heat tend to stall, and any plants that do establish won't have enough cool nights in fall to produce the tight, papery blooms that make Cranberry Rose worth growing in the first place.

Complete Growing Guide

Tall, well-branched plants produce double flowers 2-2 1/2" across. This variety is also known as Pomegranate or Bright Rose. Also known as bracted strawflower. According to Johnny's Selected Seeds, Cranberry Rose is 75 - 85 days to maturity, annual, open pollinated. Notable features: Use for Cut Flowers and Bouquets, Ideal for Drying and Crafts.

Soil: Loam (Silt). Soil pH: Acid ( 6.0), Alkaline ( 8.0), Neutral (6.0-8.0). Drainage: Good Drainage, Moist, Occasionally Dry. Height: zer-oh-KRIS-um brak-tee-AH-tum. Spread: zer-oh-KRIS-um brak-tee-AH-tum. Growth rate: Medium. Propagation: Seed, Stem Cutting. Regions: Coastal.

Harvesting

Cranberry Rose reaches harvest at 75 - 85 days from sowing per Johnny's Selected Seeds. Expect 2-2 1/2" at peak. As an annual, harvest continues until frost ends the season.

This is an ornamental variety — not grown for harvest. Enjoy in the garden landscape.

Storage & Preservation

Fresh Cranberry Rose flowers last 7–14 days in a cool room with water and regular stem re-cutting. For longer storage, hang-dry flowers in small bundles in a warm, well-ventilated space away from direct sunlight; they'll retain color and shape for 6+ months. Alternatively, store dried flowers in airtight containers with silica gel or dried rice in a cool, dry location. No special preservation is necessary—the dried flowers are remarkably stable. For fresh arrangements lasting beyond 2 weeks, refrigerate at 35–40°F when not displayed. Avoid ethylene-producing fruits nearby. These flowers are primarily valued for drying, which requires no chemical treatment and produces heirloom-quality craft material suitable for wreaths, dried bouquets, and floral arrangements lasting years.

History & Origin

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

Australia

Advantages

+Double flowers create full, showy blooms ideal for cut arrangements
+Tall well-branched plants maximize flower production per plant
+Fast maturity in 75-85 days allows multiple succession plantings
+Easy growing difficulty makes it suitable for beginner gardeners
+Vibrant cranberry-rose color provides striking visual contrast in gardens

Considerations

-Flowers may shatter or drop petals if handled roughly during harvesting
-Requires consistent watering as drought stress reduces bloom quality
-Tall plants need staking or support in windy locations
-Limited vase life compared to other cut flower varieties

Companion Plants

Lavender and thyme are the most practical neighbors for Cranberry Rose — both want lean, well-drained soil and at least 6 hours of direct sun, so there's no water competition, and their aromatic oils have been observed to deter thrips and aphids from adjacent flowers. Tagetes patula marigolds add another layer of pest disruption and echo the papery warm tones nicely. In our zone 7 Georgia beds, chives and other alliums pull double duty: they stay tidy through the long humid season and don't shade out the helichrysum the way taller companions can. Black walnut is a hard no — it releases juglone into the surrounding soil, and helichrysum roots are sensitive enough that even moderate exposure will cause wilting and dieback that looks like drought stress until you dig down and realize the roots are rotting.

Plant Together

Lavender

Repels aphids and other pests while attracting beneficial pollinators

Marigold

Deters nematodes and aphids with natural pest-repelling compounds

Clematis

Provides complementary climbing structure and shares similar soil preferences

Catmint

Repels ants, aphids, and rodents while attracting beneficial insects

Alliums

Natural fungicide properties help prevent black spot and powdery mildew

Parsley

Attracts beneficial insects and provides ground cover without competing for nutrients

Thyme

Repels cabbage worms and other pests while improving soil drainage

Nasturtium

Acts as trap crop for aphids and adds pest-deterring compounds to soil

Keep Apart

Black Walnut

Produces juglone which is toxic to roses and inhibits their growth

Large Trees

Compete for water and nutrients while creating excessive shade

Brassicas

Heavy feeders that compete for nutrients and may attract pests harmful to roses

Troubleshooting Cranberry Rose

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

Seedlings damping off at soil level — stems pinch thin and collapse within 7-14 days of germination

Likely Causes

Pythium or Rhizoctonia fungal rot from overwatering or poorly drained seed-starting mix
Trays kept too wet in low-light, low-airflow indoor conditions

What to Do

1.Water from the bottom only, and let the top of the mix dry out between waterings
2.Run a small fan near trays for a few hours a day to improve air circulation
3.If you've had damping off before, drench the mix with a diluted hydrogen peroxide solution (1 part 3% H2O2 to 9 parts water) before sowing

Lower leaves developing gray fuzzy patches, especially after a stretch of humid cloudy weather

Likely Causes

Botrytis cinerea (gray mold) — thrives when humidity stays above 80% and airflow is poor
Plants spaced too close together at 6-8 inches instead of the recommended 12-18 inches

What to Do

1.Strip affected leaves and bag them for the trash — don't compost them
2.Thin or transplant crowded plants out to at least 12 inches apart
3.Avoid overhead watering; switch to drip or base watering in the morning

Leaves and stems coated in white powdery residue, most visible on the upper leaf surface in late summer

Likely Causes

Powdery mildew (Erysiphe or Golovinomyces spp.) — common on stressed helichrysum during hot, dry spells followed by cool nights
Overcrowded planting that blocks airflow between stems

What to Do

1.Spray affected foliage with a diluted baking soda solution (1 tablespoon baking soda + 1 teaspoon horticultural oil per gallon of water) every 7 days
2.Remove the most heavily infected stems at the base
3.Next season, hold spacing to 18 inches rather than 12 — helichrysum is more susceptible than it looks when stems are shoulder-to-shoulder

Buds and new growth distorted or sticky, with small clusters of soft-bodied insects on stem tips

Likely Causes

Aphids (likely Myzus persicae or Aphis gossypii) — drawn to tender new growth, especially in spring
Absence of predatory insects from over-use of broad-spectrum sprays nearby

What to Do

1.Knock aphids off with a firm spray of water from the hose — do this in the morning so foliage dries before nightfall
2.Apply insecticidal soap (2-3% solution) directly to colonies every 4-5 days until pressure drops
3.Nasturtiums planted at the bed edge act as a trap crop and tend to pull aphid pressure off the helichrysum

Frequently Asked Questions

How long does Cranberry Rose take to bloom from seed?▼

Cranberry Rose reaches full flowering in 75–85 days from planting. Starting seeds indoors 6–8 weeks before your last frost and transplanting after frost danger passes typically means blooms appear 6–8 weeks after transplanting in mid to late summer. Direct seeding after soil warms can delay flowering by 2–3 weeks depending on temperature.

Is Cranberry Rose good for dried flower arrangements?▼

Yes—this is Cranberry Rose's primary strength. The papery bracts and double flowers dry beautifully while retaining their vibrant cranberry color for 6+ months. Hang-dry in small bundles in a warm, airy space away from direct sun. Once fully dry (7–14 days), they're stable for years in airtight storage. Many gardeners grow this variety specifically for everlasting arrangements and craft work.

Can you grow Cranberry Rose in containers?▼

Yes, but containers must be at least 10–12 inches deep with excellent drainage. These plants become tall (often 24–36 inches), so larger pots prevent tipping in wind. Place in full sun, water regularly but allow soil to dry between waterings, and fertilize every 3–4 weeks. Container plants may bloom slightly later than in-ground specimens but produce quality flowers.

When should I pinch Cranberry Rose to get more flowers?▼

Pinch growing tips when plants reach 6–8 inches tall. This encourages bushier growth and dramatically increases the number of flowering stems. A single pinch typically results in 4–6 new branches from that point. Don't pinch too late (after 12 inches) or you'll delay blooming. Most gardeners pinch once; additional pinches produce diminishing returns.

Does Cranberry Rose need staking or support?▼

Rarely. These plants naturally develop sturdy, well-branched frameworks that support themselves. In very windy locations or if grown in containers, light staking may help prevent toppling, but in-ground plantings typically require no support. Proper spacing (12–18 inches apart) and pinching for branching eliminate most structural issues.

What's the difference between Cranberry Rose and other strawflower varieties?▼

Cranberry Rose is specifically valued for its rich, deep cranberry-red color and exceptional color retention when dried. Other strawflower varieties come in pinks, yellows, purples, and white, but this heirloom excels in longevity and intensity of hue. It's also notably tall and well-branching, making it ideal for cut-flower production rather than purely ornamental landscape use.