profile

Garden Betty

did you know these seeds *need* light to germinate?


If you started your seeds two, three, four weeks ago and they still haven't germinated, you probably wrote them off as a lost cause.

Maybe the seeds were too old. Maybe they got damaged by pests. Maybe they hadn't matured by the time they were collected.
Or maybe...

Those seeds actually need LIGHT to germinate.

While our natural tendencies are to bury seeds beneath the soil, a good number of them (around a third of the seeds we commonly start) won't germinate unless they're exposed to light. Imagine that!

And not just any light. Many light-dependent seeds require a certain amount and quality of light that mimics nature, so in some homes, simply placing your seed trays in front of a window might not be enough to help them break dormancy.

​If you're having trouble starting seeds consistently, or noticing certain seeds taking a reeeaaallly long time to germinate, check this list to see if they need light (or even total darkness) to germinate.​

(The challenge is when seeds have to be surface sown but ALSO require darkness. I've got a few tips on how to handle that in my new blog post!)

7 Simple Fixes for Leggy Seedlings: How to Help Your Plants Grow Stronger

6 Foolproof Tips to Germinate Hard-to-Start Seeds—Fast!

Why and How to Transplant Tomatoes (a Second Time)

How to Best Fertilize Tomatoes for the Ultimate Bumper Crop

29 Perennial Herbs You Can Plant Once and Enjoy for Years

The Prettiest and Most Resilient Walkable Ground Covers for Garden Paths

​

P.S. Not all seeds want to be buried in the soil. Check this list to see which seeds actually require light to germinate.​

P.P.S. Keeping track of all your seeds' specific needs when it comes to light, darkness, temperature, and more can be tricky. Write all those details down in one place with my Ultimate Garden Diary—a set of customizable garden logs, trackers, record-keepers, and journal pages you can mix and match.

Garden Betty

For people who want to grow more food with less work. 🌱 This is my weekly newsletter loved by 38,000+ subscribers—here's what one of them had to say: "These are not the regular run-of-the-mill garden-based emails. You actually touch on more unusual tidbits that encourage me to keep growing and learning."

Share this page