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Mammoth Russian Sunflower, Helianthus annuus is among tallest varieties available from Russia! This Plants grow to 15 feet ta
Mammoth Russian Sunflower, Helianthus annuus is among tallest varieties available from Russia! This Plants grow to 15 feet tall with heads up to 14" across! For the best grow, sunflowers need full sun so make sure you plant it to get the max sun light. They also grow best in fertile, moist, well-drained soil with heavy mulch. This one is a MUST GROW! Open pollinated, late season 73 to 91 days.

Mammoth Russian Sunflower

SKU: 4120-20
$1.99Price
Out of Stock

  • Quantity

    20 seeds

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  • GERMINATION INFO.

    Planting and Harvesting Tips:
    Start indoors 3-4 weeks before the last frost of spring. Transplant outside after the soil has warmed to 65˚ to 75˚F. Sow one inch deep and space 12-18 inches apart in rows 3-4 feet apart. Plants prefer full sun and moist soil with plenty of organic matter.
    Harvest daily with a sharp knife during hot weather — pods taste best when young and grow quickly past the stage of prime eating. Wear gloves and long sleeves for protection from spines.

     

    Green Thumb Tip
    Sow seeds outdoors when the soil has warmed. Tolerant of heat and drought, but not of cold. Keep well picked for higher yields.
    DIRECT SEED 2" Apart
    SEED DEPTH 1/2"THIN 6-8" Apart
    LIGHT Full Sun
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