OH, BRRR…..The first day of Spring brought Winter weather
this year. Back in January when I optimistically
started my cold-season crops, I thought this was the week I’d move everyone
outdoors. But here in Kansas City, we’re
experiencing snow and night-time temps in the low 20’s. Even with hoop houses over them that’s
extreme for seedlings whose first 6
weeks of life have been on a heat pad under warm lights.
Regardless of outdoor conditions, it’s time to act: my seedlings have simply run out of nutrients
in their tiny paper pots, as evidenced by leaves that are turning yellow and
red. They need some fresh soil to sink
their roots into!
Broccoli Raab and Red Mustard ready for up-potting. |
The only sensible thing to do: keep those babies indoors for
a few more days - weeks, maybe? - and put them in larger pots. I spent a minor fortune on ProMix in
recent years, so this year I decided to go outside the box and up-pot into compost from our backyard gardens. YES
it’s an experiment, and NO the ‘experts’ don’t recommend it; do those guys own
stock in ProMix? My raised beds contain
mostly home-made compost, so in 2 or 3 weeks these babies will have their feet
in it anyway.
I've collected further evidence that using compost as a medium for up-potting could work: last year I ‘found’ all our tomato sprouts growing in the compost
pile, so I transplanted them into compost-filled starter pots where they did
just fine until they grew large enough to go into Grow Boxes on the deck. There, they flourished and provided us with a steady supply of tomatoes until frost, despite the hottest summer on record. I’m
discovering that using "sterile" potting mix for older seedlings might be more gardening
myth (propaganda?) than this frugal gardener is willing to accept.
Here’s my economical method for up-potting into your own compost:
I chose 16 oz. plastic cups as economical pots for my growing seedlings,
poking drainage holes in the bottom with screwdriver and hammer. These are sturdy, and can be washed and reused many times.
I screened my compost to remove bio-char and sticks, which go back to the compost pile since I don’t mind these healthy fillers in my
raised beds. For a screen I used the top to our burning bowl, inverted over a bucket.
Fresh compost ready to screen. |
Here's what's left after screening. I'm returning this to the compost pile. |
Freshly screened compost. Beautiful! |
I added ½ tsp. balanced organic fertilizer to
each pot. I used Espoma for Vegetables. Since these transplants are greens prized for their leaves, I could have used a higher-nitrogen fertilizer, but I really didn't want the extra stem growth while they're staying indoors.
I also sprayed daily for 4
days with nettle infusion, a "secret weapon" this organic gardener
wouldn’t be without! It gives the seedlings a foliar nutrient boost while their roots adjust to the new space. After just 4 days, here are the results: truly happy
transplants, growing bigger and looking stronger every day! MYTH BUSTED!! The important lesson here is not to be afraid to operate slightly outside of conventional ‘wisdom.’
Broccoli raab transplants, 4 days after up-potting. |
Happy and Successful Gardening, everyone!!
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