I made a mistake by planting my tomato seeds in just coco coir without any added nutrients or amendments. I learned that coco coir doesn't have any nutritional value and is usually mixed with other stuff for seed starting. I've added some worm castings to my plants after realizing this, and a few are starting to show true leaves. My other options include perlite and vermiculite, but those don't add nutrition—only moisture retention. Can I get by with just coco coir and worm castings for my seed starting mix?
2 Answers
Yes, you can absolutely use coconut coir and worm castings, but don't forget that you'll need to provide some liquid fertilizer once your seedlings develop their first true leaves. That should help them thrive!
Coco coir works well, as long as you supplement it with fertilizer. Your worm castings should help a lot, but just keep an eye on them and add more fertilizer once they start producing more leaves.
Awesome, thanks! The seedlings are still tiny, so I only did a little pinch of worm castings when transplanting them. I'll make sure to top it off with more soon.
I have some liquid fertilizer, so I’ll mix it with water. They’ve only got one true leaf each, so I’ll wait a bit longer before feeding them.