'Mammoth' is a Sunflower variety in the Helianthus genus with a scientific name of Helianthus annuus. 'Mammoth' is considered a heirloom cultivar. Blooms appear in these approximate colours: Golden yellow and Selective yellow. The mature flowers are of a Single form. Leaves appear approximately as a Dark olive green and Dark spring green colour.
This variety attains a height of 8 to 10 feet. Is fast growing and produces a giant bloom. The seed make good bird feeding in the winter.[seed packet Bentley Seeds, Inc.]
To save seeds, cut the stem beneath flower heads when the backs of the flower heads turn yellow. Hang it in a cool and dry place and let it dry. It will take about a month for it to dry. In order to keep seeds from falling on the ground, a net should be used to cover the flower.It is an Flower and is treated mainly as a Annual, This means that it grows best over the course of a single year. Mammoth is known for its Erect habit and growing to a height of approximately 1.50 metres (4.88 feet).
Mammoth Sunflower is normally quite a low maintenance plant and is normally very easy to grow - great for beginner gardeners!
This plant info is provided by the myfolia gardener's wiki. All details about Sunflower 'Mammoth' have been kindly provided by our members.
How to grow Sunflower 'Mammoth'
Growing Mammoth from seed
By our calculations, you should look at sowing Mammoth about 21 days before your last frost date.
Sunflower 'Mammoth' information
How long does Mammoth take to grow?
These estimates for how long Sunflower 'Mammoth' takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!
When should I sow Mammoth?
Folia's when to plant Sunflower 'Mammoth' estimates are relative to your last frost date. Enter your frost dates and we'll calculate your sowing and planting dates for you!
First offered by seed companies in the 1800’s.
20 May 2013
Tutor installation as they are getting really tall! Some were starting to crack. One of them already did and now it cant hold straight by itself anymore… They were not supposed to need tutor…
20 May 2013
Tutor installation as they are getting really hish! Some were starting to crack. One of them already did and now it cant hold straight by itself anymore… They were not supposed to need tutor, but I guess that growin that big inside made them a bit soft!
Popular varieties of Sunflower
- Mammoth Russian
- Lemon Queen
- Velvet Queen
- Evening Sun
- Autumn Beauty
- Giant Russian
- Red Sun
- Teddy Bear
Mammoth Sunflower Tags
This group is about the joy of growing sunflowers, taking pictures of them, collecting the seeds, for eating, future ...59 members / 20 topics