When you see root tips protruding from the bottom drainage holes in the planter it will be time to repot your plants.
added by: Kunta wears a sarong
...another way to tell if your plants need to be transplanted into bigger pots is when they require watering more than 5 or 6 times per week - this is a sure sign that they need transplanting.
Seedling taproots can reach out through the holes in the bottom of the container well before the need to transplant.
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