Starburst Greenburst DMR F1

SKU: FL3236
Starburst Greenburst is a truly unique sunflower with its semi-double golden yellow petals surrounding a pollenless green center. Read More

Exposure Full Sun

Season Warm Season

Seed type Hybrid ?

Average Seeds Per Gram 29 ?

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New for 2026
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Starburst Greenburst DMR F1

Product Details

A truly unique sunflower of semi-double golden yellow petals surrounding a pollenless green center. Starburst Greenburst's 10-15cm (4-6”) flowers bloom early on 120-159cm (4-6’) branching plants. They are eye-catching as the focal point of a bouquet or bunched on their own. High resistance to Downy mildew.

Quick Facts:

    • Yellow petals with a green center
    • Unique look
    • Branching plants
    • Pollenless

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All About Starburst Greenburst DMR F1

Latin

Latin
Helianthus annuus
Family: Asteraceae

Difficulty

Difficulty
Easy

Season & Zone

Season & Zone
Exposure: Full sun

Timing

Timing
Direct sow repeatedly after the last frost date. Starting indoors is possible, but does not gain much time. If sunflowers are allowed to get root-bound, they will lack stability at transplant time, and will require staking. Optimal soil temperature for germination: 21-30°C (70-85°F). Seeds should sprout in 10-14 days.

Starting

Starting
Sow seeds 5mm-1cm  (¼-½”) deep. Space dwarf varieties 15cm (6″) apart, but give the giants lots of room at 1m (3′) between plants.

Growing

Growing
To grow really big plants with really big flowers, enrich the soil with organic matter and incorporate 2 cups of balanced organic fertilizer per 3m (10′) of row, and irrigate regularly. When the plants are 30cm (12) tall, dissolve 5ml (1 tsp) of borax (for boron) in 350 ml (12 fl oz) of water and spread the solution over 5m (15′) of row. Be careful not to over-apply this solution. This application of boron will produce bigger seeds and flower heads. Do not apply boron to other garden plants. When the back of the flower head turns yellow, it is ready to be cut from the plant.

Companion Planting

Companion Planting
Sunflowers planted near rows of corn are said to increase yields. Sunflowers can be used to draw heavy metals, toxins, and even radiation from soil, but should be burned at the end of the season if grown for this purpose. Plant sunflowers amid squash plantings to improve pollination and overall production.

More on Companion Planting.

How To Grow Starburst Greenburst DMR F1

Growing

This blend of Micro-clover and Tall Fescue seeds takes a two-pronged approach at defeating the chafer beetle. This blend is meant for use with new, bare topsoil, and not for over-seeding existing lawns. Keep the newly seeded area well-watered as the seedlings take root. Onceestablished, this lawn will require regular maintenance, but it will stay greener for longer in the summer, and it will stand up to foot (and pet) traffic in areas of full sun to partial shade. Clover may go dormant over winter, and may appear to die back, so the fescue in this blend will keep lawns looking healthy and vibrant. This blendcontains95% Tall Fescue and 5% Micro-clover.

Starting

Spread the seed on bare soil, with no turf present, at a rate of 3.6kg (8 lb) per 1000 square feet. Seeding over existing thatch is rarely successful. Because lawn spaces tend to be large, we recommend erring on the side of caution.It’sa good ideato withhold 15-20% of seeds for filling in any bald areas later. All new plantings should be kept damp until the plants areestablished.

Timing

Sow in the period two weeks before, to eight weeks after, the last frost date. Or, in areas with mild winters, sow in early autumn, approximately eight weeks before the first frost date. 

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