For a long time now I have been trying to grow spinach, and its led me on quite a learning journey. I discovered that Kuwait is typically too hot for spinach to germinate, yet some varieties will still grow in the typical climate-controlled rooms. This is when I learned How to Speed Up Seed Germination With Stratification and why its so helpful; its the process of exposing your seeds to an artificial frost to stimulate germination. Some plants require frost in order to even germinate – like strawberries. Other plants like spinach germinate better at low temperatures, but require warmer temperatures for the seedlings to grow.
With a slight doubt in my heart I attempted the stratifying experiment just over two weeks ago using MIGardener’s method of stratifying seeds in your fridge.
And it worked! Within a few days my seeds started to grow their first roots! I couldn’t believe it. Within a week of starting the stratification process I had already transplanted my spinach seeds into their kratky buckets. Weeks of trying to get spinach seeds to germinate directly… and I could have just done this very simple step with 100% success rate.
It now means that I can theoretically grow spinach throughout the year (assuming my grow room doesn’t get too hot in the peak of summer).
It’s been one week, so how are the little seedlings faring?
Not too bad actually! The larger spinach seedlings (middle row, left) was some of the first to germinate and thus were planted a few days earlier than their brethren so he is slightly larger. Most still have their grown domes on to help maintain a humid environment and encourage that early growth.
Out of all the spinach seeds that I planted after stratifying, I lost one (perhaps transplanting him a little too early into a too warm environment). It wasn’t a particular problem as I stratified more seeds than net cups, so I had a few extra seeds that germinated to replace the lost baby.
For a while we may have had the grow lights too close; some of the very tips of the leaves show tip-burn from excess heat. We’ve since raised the light by a couple inches.
A close up shows that the largest of the spinach seems to be growing quite well. He’s put out his first true leaves, and is growing his second set. And I just love how his cotyledon leaves (the long thing ones) stick up a bit like rabbit ears or antenna! So cute!
Have you grown spinach in hydroponics? How well did they grow for you? Have you tried stratifying any seeds? Let me know in the comments below.