West Coast Seeds
West Coast Seeds (Dwarf Sunspot)
West Coast Seeds (Dwarf Sunspot)
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Helianthus annuus. Single, enormous flowers up to 30cm (12") across on very short stems. Dwarf Sunspot sunflower seeds produce stout plants that rarely grow taller than 60cm (24"). Dwarf Sunspot makes a very striking container plant, but will require regular feeding, and a fairly heavy base so that it doesn't get top heavy. The long lasting flowers produce copious seeds for wild birds to snack on. This is a really fun variety because it's so strange to see giant sunflowers on such relatively short plants. Direct sow sunflower seeds from late spring and enjoy their spectacular flowers from mid-summer to the end of the season.
Latin |
Helianthus annuus |
Difficulty | Easy |
Exposure | Full sun |
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 |
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 |
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. |

