ProCut® Orange DMR
Helianthus annuus
Wikimedia Commons via Common sunflower
Compared to standard ProCut® Orange, ProCut® Orange DMR is taller and slightly later to bloom. Otherwise, the flower color, form, and uniformity are very similar. NOTE: Downy mildew in sunflowers persists in infected soils and is especially problematic in cool, wet soils. Symptoms include damping-off, stunted plants, yellowing leaves, and the presence of downy, white mildew on the undersides of the leaves. Pollenless. Single stem.
Harvest
52-62d
Days to harvest
Sun
Full sun
Zones
2–11
USDA hardiness
Height
1-10 feet
Planting Timeline
Showing dates for ProCut® Orange DMR in USDA Zone 7
All Zone 7 flower →Zone Map
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ProCut® Orange DMR · Zones 2–11
Growing Details
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
ProCut Orange DMR is a single-stem cut-flower type — one plant, one bloom, done. Succession sowing is the only way to keep a steady supply coming. Direct sow every 14 days from April 1 through mid-June in zone 7; that cadence strings blooms together from roughly late June through September. Back off when daytime highs are consistently above 90°F — not because germination fails, but because heat-stressed seedlings produce shorter stems and undersized heads that don't hold up well in a vase.
Complete Growing Guide
ProCut® Orange DMR sunflowers can be started either indoors or direct sown into the garden, depending on your climate and preference. If starting indoors, sow seeds about four to six weeks before your last frost date in individual pots, as sunflowers don't always transplant smoothly. Alternatively, direct sow seeds into the garden one to two weeks after your last frost date, once soil temperatures have warmed to at least 50°F. This variety's later bloom time means you have some flexibility with timing, making it forgiving for gardeners who miss the optimal spring window.
Plant seeds about one inch deep in well-draining soil enriched with compost or aged manure. Space seeds or seedlings 12 to 18 inches apart, accounting for ProCut® Orange DMR's tall growth habit, which can reach up to ten feet depending on growing conditions. Loose, nutrient-rich soil promotes strong stem development necessary to support these impressive heights. Ensure the planting area receives full sun throughout the day for optimal flowering and stem quality.
Water regularly during the growing season, providing about one inch per week through rainfall or irrigation. Keep soil consistently moist but not waterlogged, especially during the first few weeks of establishment. Once plants are established, they become fairly drought-tolerant, though regular watering encourages better flower production. Feed plants with a balanced fertilizer every three to four weeks, or use a slow-release fertilizer at planting time. Reduce nitrogen applications as plants mature to avoid excessive foliage at the expense of flowers.
The DMR designation stands for Downy Mildew Resistant, which is crucial since this soil-borne disease is particularly problematic in cool, wet conditions. Even with resistance, avoid overhead watering that keeps foliage wet, and ensure excellent air circulation around plants. Watch for early symptoms including damping-off in seedlings, stunted growth, yellowing leaves, and the characteristic white downy coating on leaf undersides. If you've had downy mildew problems in previous seasons, consider rotating planting locations and sterilizing any tools used near infected plants. While ProCut® Orange DMR has resistance bred into it, environmental stress weakens this protection, so maintain consistent moisture levels and avoid temperature fluctuations when possible.
One critical aspect gardeners often overlook with ProCut® Orange DMR is providing structural support as plants reach their maximum height. Even tall, vigorous varieties benefit from staking, especially in windy locations or when growing the largest specimens. Install supports early in the season, before plants become too tall and their roots establish deeply.
The pollenless, single-stem nature of ProCut® Orange DMR makes it ideal for cut flower production, as stems remain clean and flowers last longer indoors. No pinching or pruning is necessary—simply allow the plant to focus all its energy on producing one exceptional bloom.
Harvesting
ProCut® Orange DMR reaches harvest at 52 - 62 days from sowing per Johnny's Selected Seeds. As an annual, harvest continues until frost ends the season.
Seeds are ovoid and somewhat flattened
Color: Black, Brown/Copper. Type: Achene. Length: < 1 inch. Width: < 1 inch.
Garden value: Edible
Harvest time: Fall
Edibility: Seeds are used for cooking oil, livestock feed, and as a snack food or garnish. Petals are edible and young flower buds can be steamed like artichokes.
Storage & Preservation
Store fresh-cut ProCut® Orange DMR sunflowers in a cool location, ideally 65-72°F, away from direct sunlight and ripening fruit which produces ethylene gas. Keep stems in clean water, changing water every 2-3 days for optimal longevity (7-14 days vase life). For preservation, hang-dry bundles upside-down in a warm, dark, well-ventilated space for 2-3 weeks to create long-lasting dried arrangements. Alternatively, press individual petals between paper for botanical crafts, or freeze flowers in ice cubes with water for decorative applications.
History & Origin
ProCut® Orange DMR is an F1 hybrid developed through controlled cross-pollination. Listed in the Johnny's Selected Seeds catalog.
Origin: Western United States
Advantages
- +Taller stems than standard ProCut Orange make it ideal for arrangements
- +Excellent flower color, form, and uniformity match premium ProCut standards
- +Pollenless variety reduces allergen concerns for indoor floral displays
- +Easy to grow with relatively quick 52-62 day production timeline
- +Single stem design simplifies harvesting and post-harvest handling
Considerations
- -Downy mildew susceptibility requires careful soil management and moisture control
- -Cool, wet soil conditions dramatically increase disease pressure and crop loss
- -Slightly later bloom timing requires adjusted planting schedules versus standard ProCut
Companion Plants
Marigolds (Tagetes erecta) and nasturtiums are worth planting nearby — marigolds deter aphids and whiteflies through root-zone chemical secretions, and nasturtiums act as a trap crop that pulls aphids off your sunflower stems before they become a real problem. Beans fix nitrogen at a shallow root depth that doesn't compete with sunflower taproots, so that pairing costs you nothing. Keep ProCut Orange DMR away from fennel (Foeniculum vulgare), which chemically inhibits most annuals in its vicinity, and from any black walnut (Juglans nigra) on the property — juglone leaches through the soil far past the drip line and is broad enough in its toxicity to stunt or kill sunflowers outright.
Plant Together
Marigolds
Repel nematodes and aphids while attracting beneficial insects
Zinnia
Similar growing conditions and both attract pollinators and beneficial predatory insects
Nasturtium
Acts as trap crop for aphids and cucumber beetles, protecting sunflowers
Cosmos
Compatible height and attracts beneficial insects like lacewings and parasitic wasps
Basil
Repels thrips and aphids that commonly affect sunflowers
Borage
Attracts pollinators and beneficial insects while improving soil health
Lettuce
Benefits from sunflower shade and doesn't compete for nutrients
Beans
Fix nitrogen in soil which benefits sunflowers' nutrient needs
Keep Apart
Black Walnut
Produces juglone which is toxic to sunflowers and inhibits growth
Fennel
Allelopathic properties inhibit growth of sunflowers and most garden plants
Potato
Both are susceptible to similar fungal diseases and may increase disease pressure
Troubleshooting ProCut® Orange DMR
What you'll see, why it happens, and what to do about it.
Seedling stems pinched off at soil level, often overnight, with no sign of the missing plant above ground
Likely Causes
- Cutworms (Agrotis spp.) — larvae curl in the top inch of soil during the day and feed at night
- Transplanting into beds with heavy thatch or unincorporated crop debris, which shelters larvae
What to Do
- 1.Press a cardboard collar or a cut-off plastic cup (bottomless) 2 inches into the soil around each transplant at planting time
- 2.Dig around the base of cut seedlings — you'll usually find the larva within 2 inches — and destroy it
- 3.Apply Bacillus thuringiensis var. kurstaki (Btk) as a soil drench at transplant time if cutworm pressure has been bad in previous seasons
White to gray powdery coating on upper leaf surfaces, usually appearing mid-season on older leaves first
Likely Causes
- Powdery mildew (Golovinomyces cichoracearum) — a common fungal pathogen on Helianthus, worse when nights are cool and days are warm
- Crowded spacing that limits air movement around the canopy
What to Do
- 1.Strip and trash the worst-affected leaves — don't compost them
- 2.Spray affected foliage with a potassium bicarbonate solution (follow label rates) or diluted neem oil (2 tsp per quart of water with a drop of dish soap) every 7 days until new growth looks clean
- 3.Space plants at least 12 inches apart — ProCut Orange DMR carries downy mildew resistance, but powdery mildew is a separate pathogen and spacing still matters
Petals and disc florets chewed or missing, with small green or brown insects visible on the flower head near harvest at 52–62 days
Likely Causes
- Sunflower headclipping weevil (Haplorhynchites aeneus) or grasshoppers (Melanoplus spp.) feeding directly on open blooms
- Lygus bugs (Lygus lineolaris) causing distorted or pitted disc florets before the flower fully opens
What to Do
- 1.Cut stems at the bud-showing stage — just before fully open — for cut-flower use; you'll get the longest vase life and sidestep most petal damage
- 2.Use floating row cover over young plants to exclude grasshoppers; remove it once stems reach 18 inches and are too stiff to cover without damage
- 3.Knock lygus bugs off plants into a bucket of soapy water in early morning when they're slow-moving
Frequently Asked Questions
How long do ProCut® Orange DMR sunflowers last in a vase?▼
Is ProCut® Orange DMR sunflower easy to grow for beginners?▼
When should I plant ProCut® Orange DMR sunflowers?▼
Can I grow ProCut® Orange DMR sunflowers in containers?▼
What makes ProCut® Orange DMR different from standard ProCut® Orange?▼
What is downy mildew and how do I prevent it in sunflowers?▼
Growing Guides from Wind River Greens
Where to Buy Seeds
Sources & References
External authority sources used in compiling this guide.
- BreederJohnny's Selected Seeds
See the Methodology page for how this data is sourced, what's AI-assisted, and known limitations.