With their huge , vibrant yellow-bellied flush heads , Mammoth Russian helianthus make a sensational statement in any garden . But did you know you could successfully raise these towering smasher in peck too ? While they need sizable elbow room for their longsighted taproots and wide foliage , with the right charge Russian Mammoth sunflowers can thrive in containers .
Choosing the Right Pot
gigantic Russian sunflower can hit up to 12 feet tall at maturity . To hold their sizing , select the enceinte pot you’re able to , at minimum 5 gallons . A 15 - 25 gallon grass is ideal . The wider , the in effect , as these plants have spreading roots . Ensure drainage holes are present .
For stability , pick a expectant container that wo n’t well blow over . fabric like terracotta , concrete , wood , or metallic element work well . Plastic is o.k. too if sufficiently hardy . Go as wide as your infinite allows . Wider pot give more root elbow room .
Soil and Sunlight
Mammoth sunflower need nutrient - full-bodied , well - draining soil . Use a quality potting mix amended with compost . They are cloggy feeders , so mixing in some sluggish - release fertiliser at planting encourages vigorous growth .
Situate pots in a spot receiving full sun – at least 8 60 minutes day by day . Mammoth helianthus thrive in hot , sunny position . Rotate pots occasionally for even sun exposure .
Planting and Care
Wait until after the last frost to plant seeds or seedling in flock . Start with sowing 3 - 4 seed per container . Cover with 1/2 inch stain . Thin to the strongest seedling once sprouted .
pee new plants regularly , observe grease consistently moist but not soggy . supply a few inches of mulch to retain wet as they grow . Feed with dilute liquid fertilizer every 2 - 3 week .
Tie plants to bamboo stakes once they reach 2 foot . This provides support against wind and heavy flower heads . fend off disturbing the roots when staking .
Container Size Considerations
For gnome miscellany under 4 foot , 1 - 2 gallon pots suffice . But mammoth sunflowers require much more distance . specify ancestor way intend stunted outgrowth and smaller flowers .
If only little container are available , opt for a dwarf or semi - dwarf stock like ‘ Suntastic Yellow ’ , ‘ Floristan ’ , or ‘ Tall Single Mix ’ . Skip mammoth eccentric .
With enough quad mammoth varieties can give their full towering potential drop on a patio or balcony . Just be sure to offer substantial staking and wind security . Container - maturate sunflowers may call for their heavy flower headway defend .
Overwintering Sunflowers in Pots
Sunflowers are tender annuals that die after frost . In very strong zones ( 9 - 10 ) , potted plant life may come through winter open air . Elsewhere , the goal is getting them to blossom before first frost .
To overwinter , take cuttings in gloam and circulate fresh plants the following spring . gigantic sunflowers do n’t always amount reliable from saved seed . For faithfully giant efflorescence , buy fresh seminal fluid annually .
Enjoying These Summer Giants
With their bold size and colors , Mammoth Russian sunflower in jackpot make focal points wherever placed . Choosing large containers furnish way for roots and foliage to thrive . Give them a try this year for a fun erect accent on your patio or in garden beds .
StepsPart
Reader Success Stories
Grow Giant Sunflowers | Everything You Need To Know. Gardening Tips and Tricks
FAQ
Do gigantic Russian sunflowers want support ?
Do helianthus grow well in pot ?
Where is the best place to plant gigantic sunflowers ?
How swelled do mammoth Russian helianthus get ?
Are Russian mammoth sunflowers eatable ?
The seeds are great for roasting , and the bird get laid to use up from the sunflower heads in crepuscle . Russian Mammoth sunflowers can produce to 12 feet in height . efflorescence heads on this yearly plant can rise to 14 inches in diameter . The stems are heavyset and abide the top of the efflorescence . source are edible and great for roast .
How big do Russian mammoth helianthus get ?
Russian Mammoth sunflowers can grow to 12 animal foot in height . Flower heads on this annual plant can originate to 14 inches in diameter . The stems are thick and support the tiptop of the prime . seed are comestible and corking for roasting . The seed heads can also be used to feed the wild birds .
How do you handle for Russian mammoth sunflowers ?
Here are some tips on caring for your Russian Mammoth helianthus once they ’ve germinated … Water weekly , at least to 1 inch depth . These flowers need a middling amount of water during dry enchantment – you may have to water doubly per calendar week during prolonged drought . Ideally , you should render each plant with about a gallon of water supply .
Can you grow Russian mammoth helianthus ?
While most people grow Russian Mammoth Sunflowers purely for their decorative economic value , it ’s important to note that you may also harvest seminal fluid from the heads if you choose ( some masses even harvest the fullhead , fuddle it on the grillroom just like they would corn on the cob ! ) .
