When should houseplants be repotted?
When roots completely fill the pot, it’s time for a repotting. At this point the old soil has probably worn out and plant growth has slowed. You may be able to recognize this stage from the appearance of the plant, or roots may be growing out of the bottom of the pot. A sure test is to slide the root-ball out of the pot and examine it. If the surface of the root-ball is interlaced with roots, the plant needs repotting. This can be done at any time of year, but with mature plants, it is generally best at the end of a resting period, just as new growth begins.
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