Seed Swaps


This planting has been archived (Other).

Sown from my sunflower Seeds.

Latest Milestone Sown

Quantity: 1

Plant Sunflower Helianthus annuus 3793


Care Instructions

If sowing directly, aim to sow 0.49 inches (1.25 cm) deep and try to ensure a gap of at least 2.93 inches (7.5 cm).

Mammoth Russian normally grows to a max height of 9.75 feet (that's 3.00 metres metric) so ensure you have enough space in your garden for this plant.

Your garden has full sun light which is ideal for Sunflower 'Mammoth Russian'.

Remember to water often.

Your garden's USDA Hardiness Zone (7) is within the ideal range for Sunflower 'Mammoth Russian'. The recommended range is between Zone 4 and 9.

Sunflower 'Mammoth Russian' ideally needs a soil ph of 5.7 to 8.1 (acidic to alkaline soil), so check your soil acidity regularily.

More information about sunflower is available in the Folia gardener's wiki. All sunflower Care Instructions have been kindly provided by our members.

Linked Plantings & Stash Items

Name Garden Gardener Location Planted Archived


  • 14 Mar 2019

    Sown day 0


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