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Sunflower, Del Sol Hybrid

Short Description

A cheery sunflower-yellow surrounding deep brown centers.

Full Description

Del Sol is extra-early and long-stemmed. Great for cutting, these hybrid sunflowers won't shed on tabletops. Ready to cut for the vase just 50 days after sowing seed.
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Item#: 35071A
Order: 1 Pkt. (35 seeds)
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$4.95
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Product properties

Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

60-72 inches

Spread The width of the plant at maturity.

8-12 inches

Ornamental Use Ways in which the product may be used in the garden for ornamental effect.

Beds, Borders, Cut Flowers

Life Cycle This refers to whether a plant is an annual, biennial or perennial. Annuals complete their life cycles in one year; biennials produce foliage the first year and bloom and go to seed the second year; perennials can live for more than two years.

Annual

Sow Method This refers to whether the seed should be sown early indoors and the seedlings transplanted outside later, or if the seed should be sown directly in the garden at the recommended planting time.

Direct Sow

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Growing Sunflowers
See how easy it is to grow these summertime favorites.
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Sunflowers are grown from seed sown directly in the garden after frost.

  • Direct sow seeds in average soil in full sun after all danger of frost.
  • When choosing a site consider that sunflowers need a well-drained soil.  They face the sun, so make sure they are in an open area of the garden. The taller varieties will cast shadows on other plants, so plant these at the north end of your garden.
  • Prepare the soil by removing weeds and working organic matter into the top 6-8 inches of soil; then level and smooth.
  • Most plants respond well to soils amended with organic matter. Compost is a wonderful form of organic matter with a good balance of nutrients and an ideal pH level, it can be added to your planting area at any time. If compost is not available, top dress the soil after planting with 1-2 inches of organic mulch, which will begin to breakdown into compost. After the growing season, a soil test will indicate what soil amendments are needed for the following season.
  • Sow seeds ½ inch deep in groups of 2 or 3 seeds. Space the groups 18-24 inches feet apart, depending on the variety.
  • Firm soil lightly, water and keep evenly moist.
  • Seedlings will emerge in 7-10 days.
  • Thin to one plant per group when seedlings have two sets of leaves.
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating. 
  • Mulches also help retain soil moisture and maintain even soil temperatures. For annuals an organic mulch of shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time. Always keep mulches off a plant’s stems to prevent possible rot.
  • Keep soil evenly moist but not wet.
  • Once established sunflowers can tolerate drought.
  • No fertilizer is needed unless the soil is poor. Do not over fertilize.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • Some varieties only produce one bloom so once the bloom is spent, the plant may be removed.
  • Remove plants after they are killed by frost in fall to avoid disease issues the following year.
  • Edible sunflowers will mature in about 3 months or more after sowing. To harvest the seeds, cut the heads off after the stalks are quite dry but before fall or winter rains come. Check the flower heads for maturity to see if the florets in the center of the flower disk have shriveled and the back of the flower head is turning yellow, or the head is starting to droop. Cut flower-heads with a foot of the stalk attached. Hang heads in a warm, dry, well-ventilated place so the seeds may fully ripen and dry. Cheesecloth, netting or a paper bag with holes punched in for ventilation should be placed over the head to protect the seeds and to collect those that may drop from drying.
  • Shorter varieties may be grown in containers. Be sure to use a commercial potting mix.
  • Pollenless varieties make terrific cut flowers.
Sun
Full Sun
Height
60-72 inches
Spread
8-12 inches
Ornamental Use
Beds, Borders, Cut Flowers
Life Cycle
Annual
Sow Method
Direct Sow
Flowering
true
Bloom Duration
6
Sunflower, Del Sol Hybrid is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Terrific germination, piece of cake to grow We planted a ton of Del Sol seed earlier this season, and the germination rate was outstanding. With a bit of water and fertilizer, these sunflowers grew tall and strong (although they're still a bit short of the 5-6' I thought they'd be). All of them have at least one massive bloom, with several smaller blooms per plant. If I had only wish, it would be that the plants grew just a bit taller, so it served as a taller backdrop. Overall though, these are five star plants, and I highly recommend them to anyone.
Date published: 2014-05-14
Rated 5 out of 5 by from Gorgeous flowers These were too beautiful to cut. They stood tall among the zinnias and cosmos at just the right height to provide a lovely backdrop. The branching nature of the flowers was a plus. I didn't cut the heads but left them - we had lots of goldfinches last summer that simply adored them. Germination was quick and vigorous - I will definitely plant them again.
Date published: 2014-03-22
Rated 5 out of 5 by from cool they are cool to watch grow because they are really preaty
Date published: 2007-01-25
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