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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
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Description
mammoth sunflower seeds for planting Sunflower Mammoth Seed RAW / 250 seeds / UNTREATEDBuy 3 Get 1 Free Collection > >These plants are 8' and more in height when well grown and make an effective screen or background. The impressive flower heads have brown centers surrounded by yellow petals and are often 12" across. When dry, the seed heads can be cut and sold as is for wild bird food. Or spread them out under cover until seeds loosen and shatter out of the head, then package them as snack food and for baking. Color: Brown centers
These plants are 8' and more in height when well grown and make an effective screen or background. The impressive flower heads have brown centers surrounded by yellow petals and are often 12" across. When dry, the seed heads can be cut and sold as is for wild bird food. Or spread them out under cover until seeds loosen and shatter out of the head, then package them as snack food and for baking.Color: Brown centers surrounded by yellow petals
Growing Tips
To ensure your Mammoth Sunflower seeds grow to be tall plants, remove weeds with the help of a natural mulch. Using mulch also helps retain soil moisture and heat. Use shredded leaves as an organic mulch for your Giant Mammoth Sunflower seeds to improve soil quality. Always keep mulch away from the flowers' stems to prevent possible deterioration.To harvest your Mammoth Sunflower seeds for sale or eating, cut the head off after the stalk dries but before fall or winter rain arrives. The flower is ready for harvest when the florets in the center wilt and the back of the flower head is turning yellow or starting to droop. Mammoth sunflower seeds do best when directly sown in a full-sun location with warm, well-drained soil after frost potential is past. Provide a trellis, heavy cord or fence for young vines to climb and develop their strong stalks. Once established, these annuals offer fair drought tolerance. Huge flowers turn the heads of passersby and appeal to butterflies and other pollinators.
Buy tall sunflower seeds online today for an eye-catching summer display of height and color!
Shipping Notes
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Truly see the difference
Size: 40 Count (Pack of 1)
Works amazingly. Definitely worth it.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
The strips work great!
Size: 40 Count (Pack of 1)
It's a great product that works. I left the strips on for 2 hours. And my teeth were so white, I decided not to use the light. I drink 3-4 cups of strong coffee everyday, and they are still really white (after one application over two weeks ago). My gums were a little sensitive after 2 hours, but that only lasted a few hours after usage. Just be aware if you leave on more than 60 minutes. Then brush and rinse really good. I use their "brilliance" tooth paste as well.
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Reviewed in the United States on June 16, 2025
★★★★★ 4
DOOOO IT (see before & after pics)
Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)
My dentist actually recommended this in contrast to the products offered in office! So I had to try. I was especially interested in a whitening system that would not sacrifice effectiveness for gum sensitivity. Not only could I see instant improvement, but I had no gum irritation whatsoever, not even next day. So that's the two big things that exceeded expectation. A few drawbacks though - (1) Instructions were unclear as to how long to leave the light on, & I didn't realize until after mixed Internet recommendations & testing it out blindly that it automatically times out after a few minutes; (2) the product unfortunately outlasts the light's battery life, so I had to find a $16 replacement LED on Ebay, & (3) the adhesive will strip your dental work fyi. Not cool, but still overall beneficial as a whitener & hundreds cheaper than true, professional whitening. BTW this before and after were taken within a month of each other.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Amazing transformation!!
Size: 40 Count (Pack of 1), Size: 40 Count (Pack of 1)
I hardly ever write reviews, but this product has transformed my life. And imonly on the forth day. After the first day it removed so much of my yellow stains. I can't even think about how white my teeth will be when I finish. I called my dentist to see how much it would be to whiten my teeth and she said $500. Are you kidding me? So I ended up trying these white strips instead. I'm so happy with the results after only a few days!! The first picture is the start, then after using the strips 1 time, then after using the strips 3 times. I had to come and post a review immediately. The pictures speak for themselves. And not to mention that I usually have sensitive teeth. So far my teeth don't hurt while using. I will definitely use this product every year. Thanks Crest!!
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Extremely effective, though teeth sensitivity can occur
Size: 40 Count (Pack of 1)
My teeth looked so much whiter after using only one strip. It does cause teeth sensitivity though, I believe there is another version from the same brand for those who have sensitive teeth.
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Reviewed in the United States on January 4, 2026