Starburst Greenburst DMR (F1) Sunflower Seeds

Now with Downy Mildew Resistance (DMR). Greenburst DMR has a yellow golden semi-double flower bursting around a green center. Provides a similar look to Gerberas, but of course, they have much longer stems. Flowers are profuse on branching plants. Give Greenburst DMR ample spacing and it branches abundantly over a long period. Is an excellent cutflower and blends well with other sunflowers. Pollen-less. Ht. 48-72″. Avg. 620 seeds/oz. Packet: 50 seeds.NOTE: Downy mildew in sunflowers can still survive in infected soils. Cool and wet soils tend to have more issues with DM. Symptoms include damping-off, stunted plants, yellowing leaves, and the presence of downy, white mildew on the undersides of the leaves.

Plant Height: 5-6′

Botanical Name: Helianthus annuus

Flower Height: 48-72″

Seed Type: Seed

Additional Characteristics: Branching

Seeds Per Gram: 22

Seeds Per Pound: 9,920

Packet: 50 Seeds

Sow Depth: 1/2″

Disease Resistance: DM

Seeds Per Ounce: 620

Breed: F1 Hybrid

Sun: Full Sun

Uses: Cut Flowers

Life Cycle: Annual

Sow Method: Direct Sow

Categories: Flowers

Days To Maturity (# Days): 60

Seeds Per Acre: 3 lbs

Growing Instructions

Learning Download:How to Grow Sunflowers

Sunflowers are one of the easiest flowers to grow from seed. Sunflowers grow wonderfully along a border and are a good option to grow with children.

Before Planting:Sunflowers are very tough and can grow in nearly any soil, but prefer full sun.

Planting:Sunflower seeds do best when planted directly into the garden after the last frost date has passed. Plant seeds 6 inches apart and 1 inch deep in a shallow trench.

Watering:Sunflowers need water the most during their growth period, which is 20 days before and after flowering.

Fertilizer:Sunflowers typically do not require fertilizing because they grow so easily, but a slow-release granular fertilizer can be added to poorer soils as the better the soil, the bigger the flowers will grow.

Days to Maturity:Sunflowers bloom around 120 days

Harvesting:In addition to storing the flowers in a vase to lighten up a room, Sunflower seedlings can be harvested once the flowers are done blooming and have spread their for culinary use.

Tips:Do not grow Sunflowers near potatoes or pole beans, as their leaves, seeds and stems emit a substance that inhibits some other plants growth.