Glass Gem Flint Corn Seeds


This packet sows up to 19 feet.
4.1818181818182 out of 5 stars
(11 reviews)
Availability: In Stock
An unbelievably stunning corn bred by part-Cherokee farmer, Carl Barnes, from ancestral, Native American corn. Ears are a kaleidoscope of gem-like, rainbow kernels. 'Glass Gem' goes beyond pretty ornamental corn, it can also be used to make cornmeal, flour, popcorn, or traditional parched corn.
$6.29 8 grams (~38 seeds)

Botanical Name: Zea mays

Days to Maturity: 100–110 days

Family: Poaceae

Native: Americas

Hardiness: Frost-sensitive annual

Plant Dimensions: 6'–10' tall

Variety Information: Ears are 3"–8" long, with colorful, opalescent kernels; 2–5 ears per stalk depending on conditions. Developed from crosses of heirloom Pawnee miniature popcorns with an Osage red flour corn, and another Osage corn called 'Greyhorse'.

Type: Flint (Learn More)

When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date, and when soil temperature is at least 60°F.

When to Start Inside: Not recommended.

Days to Emerge: 5–10 days

Seed Depth: 1"–1 ½"

Seed Spacing: A group of 2 seeds every 12"

Row Spacing: 24"–36"

Thinning: When 4" tall, thin to 1 every 12"

Harvesting: Let the ears dry on the stalks. The kernels are ready for harvest when they are hard and you can no longer leave a mark on them with your fingernail. Before the first fall frost, give each ear a twist until it breaks off. Peel back the husks, then hang the ears in a cool, dark, dry place for 4 to 6 weeks to cure. This is important to prevent mold and to dry to the optimal moisture percentage for popping. (In a perfect popcorn world, that would be 13½–14%.) After that, the cobs are ready for popping or storing. To strip off cured kernels, twist the cobs back and forth to loosen them (gloves are recommended).

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Glass Gem Flint Corn Seeds Reviews

11 reviews

Colorful display and delicious popcorn

4 out of 5 stars Mar 19, 2019
The Glass Gem corn performed quite well despite an intense drought last year. They are much slimmer and shorter than the Wachichu Flint I have grown in the past, but were more prolific in a small plot. Try to let the corn go as long as possible to achieve deeper color. Those I picked a week early were pale and not so glassy like those I picked later. The corn all seemed disappointingly pale when first picked, but the colors appeared over the drying period. The blue in the corn is more in the gray spectrum, but the purples, reds and golden yellows were gorgeous! After using as autumn decorations inside the house, I shelled most of the ears for popcorn. They popped up bright white, light as air on the tongue and had a richer flavor than any store-bought popcorn offers.
Caryn from TX

Colorful Corn Didn't Grow

1 out of 5 stars Aug 23, 2019
I was really hoping this corn would grow. I love popcorn and this would have been very cute to leave out for decoration but none of the seeds grew for me this year.
Hannah from OH
Owner Response: Thank you for taking the time to share your experience. Corn does take quite warm soil temperatures (over 65 degrees F) to germinate well and as a large seed, it can rot more easily in wet, cool soil. We will be in touch shortly to share some more tips for corn germination.

Amazing colored corn

4 out of 5 stars Sep 14, 2019
I grew the Glass Gem corn for the first time. It turned out great. I got 30 beautiful ears from 30 stalks all with different colors and patterns. I will grow again next year.
Susan Eckard from WV


5 out of 5 stars Aug 17, 2020
I grew these, good germination, good growth, good everthing. I buy exclusively from these guys. Best
Colin W Wigington from TX

Glass Gem Corn

2 out of 5 stars Sep 29, 2020
I was disappointed. The stalks grew and developed husks but no corn. I'll try again next year.
Robert L. Garcia from CA
Owner Response: Hi Robert, This sounds like it could be a nutrient or pollination issue. If you had silks, I would check the hand pollination article in the "learn more" tab on this product page. If you didn't even see silks I would get a soil test to see how the soil can be amended to produce corn. Since there isn't anything about the seed that would cause this to happen this is my best advice. We are always here to help troubleshoot issues--please don't hesitate to contact us.

Gorgeous corn

5 out of 5 stars Oct 13, 2020
The seed packet recommended regular watering, but I only watered a handful of times when the plants were less than 6" tall. The plants were growing the corn during a drought, and remarkably each plant still produced at least two beautiful ears of corn, and occasionally a third, smaller, ear of corn. I have yet to pop it. Unfortunately the area was not well fenced off, so the racoons got to enjoy more of the corn than I did. Will this corn grow true if I plant the seeds next year? From the description it seems the corn may be considered a hybrid.
Anna from PA
Owner Response: Hi Anna, I wonder if the corn was less than 6' not inches. This is an open-pollinated cultivar, which means you can save seeds. We label the few hybrids we carry right by the botanical name as "hybrid". Happy gardening!

All germinated

5 out of 5 stars May 20, 2021
All the seeds have germinated where I planted them. I planted them with butternut squash, bean trio (also from your website), and soybeans. I have 12 coming up in one area of the garden and another 12 in another area.
Josie from NM

just fantastic

5 out of 5 stars Feb 11, 2022
I LOVE this corn. I bought it thinking I would get a few pretty ears. What I got was many beautiful ears, all different. The ears varied in size and are just great for decorating for fall. I can't wait to grow more this year.
Karen from NY


5 out of 5 stars Sep 17, 2022
Germinated well . I just picked my first dried corn cob and it is beautiful! All that I hoped for! I have quite a few more growing and am looking forward to popcorn this fall. Definitely recommend!
Alison from CO

So Beautiful!

5 out of 5 stars Sep 30, 2022
I just harvested this corn today. It is so incredibly gorgeous. I threw some seeds in an empty bed that doesn't get a ton of light, so each stalk only gave me about one ear. I am just thankful to have any. They are so beautiful! Most of my ears lean towards purple colors. I am going to double the amount planted and change locations next season to get even more corn and hopefully more colors!
Taylor from NM


5 out of 5 stars Jan 19, 2023
These grew way shorter than expected, only about waist height probably from the sandy dry soil. I was hoping for them to be taller but I don't really mind. But anyway these still grew full size cobs and are so unique. I have noticed each plant has its own colour scheme mostly dependent on what colour the seed of that plant was. So cool.
Jonathan from CA

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