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MAMMOTH RUSSIAN Giant Sunflower 6140

$1.99 - $78.75

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If you want to grow the champion sunflower for the fall fair, this heirloom variety is the one to choose! Huge, single yellow blooms ranging from 25-35 cm (10-14") in diameter are produced on tree trunk like stems that can easily grow to 3 m (9') or more in height! This is the best variety for feeding the birds as well as for roasting seed for yourself! Taller plants may need staking due to the weight of their mighty seed heads!

 

This product is part of the Urban Garden Collection; click here to check it out.

  • Packet $1.99
  • 25g $8.00
  • 125g $18.50
  • 500g $44.75
  • 1 kg $78.75

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Item
* Quantity:
6140
9-10 seed/gram Easy to grow. In late May, choose a sunny site with well draining soil and sow seed about 6-12 mm (1/4-1/2") deep and 7.5-10 cm (3-4") apart. Thin or transplant seedlings to 30-45 cm (12-18") apart. Seed can be started 2-3 weeks early indoors using plantable peat pots or Jiffy 7’s at 21 C (70 F). Harden off seedlings then transplant to a site in full sun. Keep plants evenly watered and fertilize twice during the season with a granular 15-5-15 or equivalent.
High Summer
Annual
Start Indoors or Sow Direct in Spring
5 to 10
Full Sun
Sturdy
Tall (2 to 4 m)(6.6' to 13')
Killed by Frost
Easy
Heirloom
Asteraceae
Helianthus annus
Pollinator and wildlife plant
Tallest/largest sunflower contest
Produces best sunflower seed for roasting
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