White Sweet Spanish Onion Seeds (.5g)
Embrace self reliance with our Heirloom White Sweet Spanish Onion Seeds. Known for yielding large and flavorful onions, they are perfect for topping your homemade burgers.
Our seeds from Patriot Seeds are 100% heirloom and non-GMO. With packaging in military-grade Mylar, these seeds are safe for over 5 years of storage.
To ensure a successful growth journey with your White Sweet Spanish Onion Seeds:
- These seeds thrive in well-drained, weed-free locations. Raised beds are an excellent choice.
- It's best not to plant where other onion family crops grew in the last 3 years.
- Direct seed in the spring when the soil reaches 50°F. Seeds should be 1/2 an inch deep and 1/2 an inch apart, in rows 12 to 18 inches apart.
- If you're transplanting, start the seeds indoors 8 to 10 weeks before the last frost.
- Maintain consistent moisture and weed control. Weekly watering in dry weather and mulching to retain moisture and suppress weeds are recommended.
For a successful harvest of your White Sweet Spanish Onion:
- Onions are ready to harvest when the leaves lose their color, weaken at the top of the bulb, and flop over.
- After 80% to 90% of onion tops have fallen over, bend over the rest and leave the bulbs in the ground for an additional 10 to 14 days to mature fully.
- Avoid leaving onions in the ground for more than 2 weeks after the tops die to prevent exposure to rot-causing organisms.
- Harvest onions on a sunny day, if possible. Leave them in the sun for a day to dry and kill the root system.
Seed Saving Guide
The White Sweet Spanish Onion is a biennial seed-producer, taking 2 growing seasons to yield onion seeds. Here's a quick guide:
- Order open-pollinated or heirloom seeds for the best results.
- Reserve a few onions from your harvest for seed saving.
- After harvesting, allow the onions to dry out in a cool, dry place.
- Store the onions in a braided fashion, hanging in a dark, dry area until spring.
- In spring, plant the onions back in your garden and let them flower and produce seeds.
- When the seed heads turn almost solid black, they're dry and ready to harvest.
- Use a brown paper bag to collect the seeds and store them in a cool, dark place to complete the drying process.
- Separate the seeds from the debris using seed screens or other home methods.