Sunflower Mammoth Russian Seeds

$3.25

Helianthus annus
Towering Mammoth Russian Sunflower
These are the sunflower seeds of the famous ‘Spitz’
Commonly grown for bird seed but also consumption. Seed heads to 18″ or more

Organically Grown Annual Flower Seeds for full sun
25 seeds/pkt

In stock

Description

Helianthus annus Sunflower Mammoth RussianMammoth Russian Sunflower

Type: Annual
Bloom: Summer
Flower: 12″ wide gorgeous yellow or gold flower heads with dark centers
Height: 10′ tall
Light: Full Sun
Soil: Well drained
P.H.: 6-7.5
Moisture: Moderate. Generously in dry weather
Zone: 4-11
Use: Most notably for it’s oil seed, bird seed but also for roasting & consumption, cover crop, silage
Problems: Support during winds
Notes: Fertilize in Spring to promote large flower heads
Native to: North America
Grow with: Lions Tail, Mexican Sunflower


Helianthus annuus Seed Propagation
Indoors: Possible but direct sow recommended to avoid becoming root bound
Outdoors: Direct sow 1/4-1/2″ deep, 2-3 seeds per 2-3′ in April to late May. Optimum soil temp 70-80F for germination 10-14 days. Thin to strongest

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