Buy Doomsday Onion Seeds

Does not include any taxes or shipping fees.


Today, June 18, 2021 at 10am Central, our new website, goes live! Please go to the new website for a better shopping experience! The buy pages on this site will be going away soon.

We are going to dedicate this website to our doomsday information.

This page talks about how to buy doomsday onion seeds from David's Garden Seeds. We recommend two types.  One is the 1015Y which is a fall favorite here in San Antonio.

This is our Doomsday Onion section.  It gives instructions on how many onion plants are needed to feed one person for a year.

There are about 50 calories in about one cup of onions.  That is 24 cups on a 1200 calorie diet.  Your average size onion should fill at least one cup.  So you would need 8760 onions a year. 

Let's say you need 9500 onions a year for eating, seed production and trading.  You would need about 5000 square feet to grow this many onions.

Onions take about six months to mature, two years for seeds.  They can be grown in just about any weather.  Some types can be left to overwinter.

Some onions will keep up to six months in a cool, dry storage area.  Onions can be dried or canned but it is really not necessary due to the fact that they will keep for a long time.

You can dry them and then grind this into a powder for onion spice. You can make pickled onions out of them as well.

Onion Texas 1015Y 10,000 Non-GMO, Heirloom Seeds


Released in 1983, the Texas 1015Y onion was developed by the legendary Dr. Leonard Pike of Texas A&M University. Its name derives from the planting date in Texas (October 2015).  The bigger it gets the sweeter it gets. Texas 1015 onions can weigh up to a pound or more! Stores up to two months if cured properly. The Texas 1015 is considered a Short Day onion, but many times it takes longer for bulbs to develop, so it can be used in Intermediate and in Long Day areas. Has been grown from Mexico to Ohio.  Harvest in about 110 days.

Red Grano Onion is a wonderful, all-around heirloom onion!

Onion Red Grano 10,000 Non-GMO, Heirloom Seeds


Red Grano Onion is a wonderful, all-around heirloom onion! With its crisp and mild flavor, the Red Grano onion is a great for cooking, is a perfect hamburger topping, and is delicious in salads. Being a short-day onion, the Red Grano is best suited for growing south of the Kansas/Oklahoma line. Let the medium sized, Vidalia-style Red Grano tantalize your taste buds!  Harvest in about 110-115 days.

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All of the variety information on the David's Garden Seeds® website, including the days to maturity, color and size are based on data from tests done at specific locations. Many factors, including geographic location, daytime and nighttime temperatures, the availability of plant nutrients, many unknown climate factors and insects/pest interact to determine a variety's performance. For information on which varieties will perform best in your area, we recommend that you contact your local county extension agent or a Master Gardener.

David's Garden Seeds® Mission Statement

Here at David’s Garden Seeds®, gardening is our passion. We provide top quality, non-GMO seeds so families can learn about gardening and love it.  In turn, we hope they will pass this passion down to their children and grandchildren, teaching them to grow  delicious food, fresh herbs and beautiful flowers.