Hybrid

Sunrich Orange Summer

Helianthus annuus

Photo: Muhammad Mahdi Karim · Wikimedia Commons · (GFDL 1.2)

This single-stem, pollenless sunflower is the same color as Sunrich Orange, one of our most popular varieties, but blooms 5-10 days earlier and is just a little shorter. 4-6" blooms are ideal for cut-flower production. Pollenless. Single stem.

Harvest

60-65d

Days to harvest

📅

Sun

Full sun

☀️

Zones

2–11

USDA hardiness

🗺️

Height

1-10 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 Sunrich Orange Summer in USDA Zone 7

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Zone Map

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Sunrich Orange Summer · Zones 2–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing18-24 inches

SoilWell-drained soil, tolerates a wide range of soil types

WaterModerate — regular watering

SeasonWarm season annual

ColorOrange

Size4-6"

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

Sunrich Orange Summer runs 60-65 days from direct sow to cut flower, which makes staggered plantings straightforward to plan. In zone 7, direct sow every 14-21 days starting April 1 through late June. That cadence gets you a continuous run of stems from roughly late June through September. Stop sowing by July 1 — anything started later tends to hit harvest as day length shortens and temperatures drop, which produces smaller heads and shorter vase life.

One practical note: sunflowers don't transplant well once the taproot gets established, so stick to direct sow for succession rounds. If you want an early first flush, start indoors in late February or early March using deep cells or soil blocks — not flat trays — and transplant out in April once nights stay reliably above 45°F. Keep root disturbance minimal.

Complete Growing Guide

Sunrich Orange Summer sunflowers can be started either indoors or direct sown, depending on your timeline and climate. For direct sowing, wait until soil temperatures reach at least 50°F and all danger of frost has passed, typically two to three weeks after your last spring frost date. If you prefer to start seeds indoors, sow them four to six weeks before your last frost date in biodegradable pots, since sunflowers don't transplant well. The variety's 60-day harvest window means you can plan backwards from your desired bloom date to determine the ideal sowing time for cut-flower production.

Space Sunrich Orange Summer plants eight to ten inches apart in full-sun locations that receive at least six to eight hours of direct sunlight daily. Plant seeds half an inch to one inch deep in well-draining soil enriched with compost or aged manure. Though sunflowers are generally tolerant, this variety performs best in soil with a pH between 6.0 and 7.5 and benefits from good soil structure that prevents waterlogging. Loosen the planting area to a depth of at least twelve inches to encourage strong root development, particularly important given the variety's range in mature heights.

Water consistently and deeply once plants are established, providing about one inch of water per week through rainfall or irrigation. As Sunrich Orange Summer matures, particularly as buds form, maintain even soil moisture to prevent stress-induced pests and diseases. Reduce watering frequency as plants approach bloom time to avoid fungal issues. A balanced fertilizer applied every three weeks supports healthy growth, though avoid excessive nitrogen, which can lead to weak stems and reduce flower quality for cutting.

Watch closely for downy mildew and powdery mildew, which can afflict sunflowers during cool, humid periods and may be more pronounced on pollenless varieties. Ensure good air circulation by spacing plants properly and removing lower leaves if needed. Sunflower moth larvae can damage developing heads; monitor for entry holes and consider row covers during early growth stages if this has been problematic in your area.

For commercial cut-flower production, many growers succession plant Sunrich Orange Summer every two to three weeks to maintain a continuous harvest. Unlike some single-stem varieties that benefit from pinching, this cultivar should not be topped, as it will not branch and flower quality will be compromised.

The critical mistake gardeners make with Sunrich Orange Summer is overwatering during the blooming period. While consistent moisture is essential earlier, excessive water once flowers open promotes disease and shortens vase life. Additionally, because this is a pollenless variety marketed specifically for arrangements, avoid varieties with pollen nearby that could cross-pollinate and undo this desirable characteristic for your cut-flower work.

Harvesting

Sunrich Orange Summer reaches harvest at 60 - 65 days from sowing per Johnny's Selected Seeds. Expect 4-6" at peak. 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 Sunrich Orange Summer sunflowers in a cool location away from direct sunlight. Keep stems in clean, cool water (65-70°F) in a vase, changing water every 2-3 days for maximum longevity. For extended shelf life, remove lower foliage below the waterline to prevent bacterial growth. Fresh-cut blooms typically last 7-12 days in water. To preserve, air-dry flower heads by hanging upside down in a dark, well-ventilated space for 2-3 weeks, creating long-lasting dried arrangements. Alternatively, press flowers between heavy books for 2-4 weeks to preserve them flat for crafts and scrapbooking.

History & Origin

Sunrich Orange Summer is an F1 hybrid developed through controlled cross-pollination. Listed in the Johnny's Selected Seeds catalog.

Origin: Western United States

Advantages

+Pollenless blooms are ideal for allergy-sensitive cut-flower markets.
+Earlier 60-65 day maturity enables faster crop turnover and succession planting.
+Single-stem design simplifies harvesting and reduces labor costs significantly.
+4-6 inch blooms are perfectly sized for premium floral arrangements.

Considerations

-Shorter stature may require staking in windy growing conditions.
-Pollenless trait potentially reduces pollinator attraction for seed production.
-Limited height restricts landscape design flexibility compared to standard varieties.

Companion Plants

Marigolds (Tagetes spp.) are worth tucking along the edges of your sunflower rows — they deter aphids and spider mites somewhat, and both crops want full sun and moderate water, so there's no resource tug-of-war. Nasturtiums work well as a trap crop, pulling aphids off the sunflowers and concentrating them in one spot where you can deal with them. Bush beans fill in the lower canopy space that sunflowers leave bare, and their shallow nitrogen-fixing roots don't compete with the sunflower's deeper taproot — a genuinely practical pairing, not just a theory.

Fennel is worth keeping on the opposite end of the property. Its roots leak allelopathic compounds that suppress germination and stunt neighboring plants, and sunflowers are not immune. Pole beans are a different problem: they'll vine straight up the sunflower stalks, and in our zone 7 Georgia garden, where summer heat stacks on fast, you don't want your sunflowers wrestling with aggressive climbers when they're already pushing to finish in 60-65 days.

Plant Together

Marigolds

Repel aphids, nematodes, and other pests that commonly attack sunflowers

Nasturtiums

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

Zinnias

Attract beneficial insects like ladybugs and lacewings that control sunflower pests

Cosmos

Attract pollinators and beneficial predatory insects while complementing sunflower height

Bush Beans

Fix nitrogen in soil to benefit sunflowers, while sunflowers provide light shade

Cucumbers

Benefit from sunflower's tall structure for climbing support and light shade

Lettuce

Grows well in partial shade provided by sunflowers, maximizing garden space

Borage

Attracts pollinators and beneficial insects while improving soil health

Keep Apart

Black Walnut Trees

Produce juglone toxin that inhibits sunflower growth and can cause wilting

Fennel

Releases allelopathic compounds that stunt sunflower growth and development

Pole Beans

Can overwhelm and damage sunflower stems when climbing, competing for nutrients

Pests & Disease Resistance

Common Pests

Sunflower beetles, aphids, cutworms, spider mites

Diseases

Powdery mildew, downy mildew, rust, Sclerotinia stem rot

Troubleshooting Sunrich Orange Summer

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

Leaves covered in white powdery coating, starting on upper leaf surfaces, usually mid-to-late summer

Likely Causes

Powdery mildew (Erysiphe cichoracearum) — favored by warm days, cool nights, and poor airflow
Plants spaced too close together, trapping humidity between stems

What to Do

1.Space plants at least 18 inches apart — 24 is better if you're in a humid climate
2.Spray affected foliage with a diluted solution of 1 tablespoon baking soda per gallon of water, applied in the morning so leaves dry before nightfall
3.Pull badly infected leaves and bin them; don't compost them

Stem collapses near the soil line, plant wilts suddenly and doesn't recover — often after a wet stretch of several days

Likely Causes

Sclerotinia stem rot (Sclerotinia sclerotiorum) — a soil-borne fungus that thrives in waterlogged, poorly drained beds
Overhead watering that keeps the base of the stem wet for extended periods

What to Do

1.Cut the plant out at the base and trash it — the sclerotia (hard black bodies inside the stem) persist in soil for years and will reinfect
2.Switch to drip irrigation or water at the base only, keeping the stem dry
3.Rest that bed from sunflowers, beans, and lettuce for at least 3 seasons; Sclerotinia sclerotiorum hits all three

Young seedlings clipped off clean at the soil line overnight, no insect visible during the day

Likely Causes

Cutworms (Agrotis spp.) — fat, gray-brown caterpillars that hide in the top inch of soil during daylight and feed at night
Freshly tilled beds with high organic matter, which attract egg-laying moths

What to Do

1.Press a cardboard or plastic collar 2 inches into the soil around each seedling stem — a cut-up paper cup works fine
2.Dig around the base of clipped plants; you'll usually find the cutworm within 2-3 inches of the stem — pick and destroy it
3.Apply Bacillus thuringiensis (Bt) to the soil surface around transplants at dusk, when cutworms are actively moving

Frequently Asked Questions

How long do Sunrich Orange Summer sunflowers last in a vase?▼

When properly conditioned and maintained with fresh water changes every 2-3 days, these cut flowers typically last 7-12 days in a vase. Placing them in a cool location away from direct sunlight, heat sources, and ripening fruit will extend their vase life. Remove any foliage that would sit below the waterline to prevent bacterial growth and maintain water clarity.

Is Sunrich Orange Summer good for beginners?▼

Yes, this variety is excellent for beginners. It's a hybrid sunflower rated as 'Easy' to grow, requiring only full sun (6+ hours daily) and basic care. The single-stem design makes it ideal for cut-flower production without complex pruning or training. With a 60-65 day harvest window, it's forgiving and reliable even for novice growers.

When should I plant Sunrich Orange Summer sunflowers?▼

Direct sow seeds after the last frost date when soil has warmed. Plant seeds about 1 inch deep. For continuous blooms, succession plant every 2-3 weeks throughout the growing season. These sunflowers will bloom 60-65 days after sowing, flowering 5-10 days earlier than standard Sunrich Orange varieties, making them excellent for extending your cut-flower season.

Can you grow Sunrich Orange Summer in containers?▼

Yes, these can be grown in containers, though large pots (12+ inches diameter) with well-draining soil are recommended. Container growing allows better control over watering and placement for optimal sunlight. However, be aware that container plants may require more frequent watering and may not reach full height. In-ground planting typically produces stronger, more robust plants.

What makes Sunrich Orange Summer different from regular Sunrich Orange?▼

The main difference is timing and height. Sunrich Orange Summer blooms 5-10 days earlier than the original Sunrich Orange variety, making it valuable for early-season cut-flower production. It's also slightly shorter, while maintaining the same vibrant orange color and pollenless characteristic ideal for indoor arrangements and allergy-sensitive environments.

How much spacing do Sunrich Orange Summer sunflowers need?▼

Space plants 18-24 inches apart to allow adequate air circulation, which reduces disease risk and promotes strong stem development. Proper spacing prevents competition for water and nutrients, resulting in fuller flower heads and sturdier single stems ideal for cutting. Crowded plants may develop thinner stems and smaller blooms.