Subscribe now

Life

Why you don't need to worry about 'over-potting' your plants

Traditional advice tells us to only move growing plants to a pot one size larger. The science shows that you don't need to bother with this slow transition, says James Wong

By James Wong

19 March 2025

Potting on tomato seedlings, male gardener transplanting healthy plant from 3 inch pot to final position in 10 inch pot, Norfolk, England, April

A tomato plant finds a new home

GAP Photos/Gary Smith

Old-School gardeners are notoriously suspicious of trendy new ideas in horticulture, and with good reason. Planty social media is often filled with claims so colourfully fact-free they would make the average well-being influencer blush. But before older growers like me get too smug, it is worth remembering that much of the best-established gardening advice, when actually put to the test, also turns out to be based on pretty shaky evidence. It is hard to find a better example of this than the widely held fear of “over-potting”. Let me explain.…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox! We'll also keep you up to date with New Scientist events and special offers.

Sign up

To continue reading, subscribe today with our introductory offers

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop