🌱 Starting Onion Seeds Today (Long-Day Onions)
Today I started my onion seeds, and I wanted to show the Rooted Crew exactly what I did in case anyone else wants to try growing onions from seed this year. First, I mixed up a batch of seed-starting soil using the soil calculator. It’s that simple peat-based seed mix that stays light and drains well. Once the soil was ready, here’s the process I followed. My Onion Seed Starting Method 1️⃣ I filled a 1-gallon nursery pot with the seed starting mix. 2️⃣ I watered the soil first so the mix was evenly moist before planting. 3️⃣ I sprinkled the onion seeds across the surface of the soil. I didn’t try to space them perfectly. Onions actually do well when they start out a little crowded like this. 4️⃣ Then I added a very light dusting of soil over the seeds.Just enough to barely cover them. 5️⃣ I gently watered again to settle everything in. 6️⃣ Finally, I placed the pot in a sunny window so they can start germinating. Now we wait for the little green onion threads to start popping up. 🌱 Why I Started Them in a Bigger Pot A lot of people start onions in trays, but I like using a larger pot sometimes because it lets the seedlings grow together for a while. Later on you can simply separate the seedlings into little bunches and transplant them into the garden. It’s simple and it works. Quick Onion Tip: Long-Day vs Short-Day Onions This part confuses a lot of gardeners, so here’s the quick explanation. Onions form their bulbs based on day length, not just age. Long-day onions • Start forming bulbs when daylight reaches about 14–16 hours• Best for northern areas like Wisconsin, Michigan, Minnesota, etc. Short-day onions • Start forming bulbs when days reach 10–12 hours• Best for southern climates like Texas, Florida, and Georgia. Since we live farther north, long-day onions are the right choice. If you plant the wrong type, the plant might grow leaves but never form a proper bulb. Why Growing Onions From Seed is Worth It Most people buy onion sets, but starting from seed has some advantages: