Potting up plants – what does that even mean?

Good Sunday morning!!! I’ve been busy already today potting up tomatoes and eggplant.

But what exactly does potting up mean?

When you start seeds in a smaller seed tray, the plants can only get so big and stay happy for a short time. Just as kids grow and need bigger shoes, plants grow and need a bigger space for their roots.

That’s why gardeners have so many plastic or biodegradable pots around. As the seedlings grow out of their first home, we “pot them up” to the next size.

For tomatoes, this also helps strengthen the stem. If you’ve ever noticed, there are what look like tiny hairs all over the tomato stem/stalk. When put in the dirt, those “hairs” create roots and help make the plant stronger. That’s why when you pot up or plant out tomatoes, you bury them deep, so those hairs help the plant grow strong.

There are some plants, like squash, however that you don’t want to start in a small seed cell. You want to keep the roots in tact until you plant them in the ground. Many people don’t pre-start squash plants because their roots are so finicky but I’m trying to out run the squash vine borer this year, so I started them early and am hoping for the best.

Some plants, you don’t want to start early in cells at all. Those include carrots and, for me, nasturtium. Both like to be direct sown and left alone to flourish.

Got any questions about starting seeds and potting them up? Drop me a note or comment below.

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