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Taxonomy
Helianthus annuus 'Russian Mammoth'
Mammoth

How to care for Common Sunflower 'Russian Mammoth'
How often to water your Common Sunflower 'Russian Mammoth'

every 9
Common Sunflower 'Russian Mammoth' needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9
Finding light for Common Sunflower 'Russian Mammoth' in your home

a window
Common Sunflower 'Russian Mammoth' may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.
Place it less than 3 feet from a south-facing window to maximize the potential for growth.
Select your region to see how the current weather in your area affects the placement of Common Sunflower 'Russian Mammoth' in your home 🏡.
How to fertilize Common Sunflower 'Russian Mammoth'

Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Common Sunflower 'Russian Mammoth' after it doubles in size or once a year—whichever comes first.
Care Summary for Common Sunflower 'Russian Mammoth'
Common Sunflower 'Russian Mammoth'
Greg recommends:

0.5 cups every 9 days

< 3ft from a window

Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
