GardenMath

๐Ÿชฃ Container Size Helper

Find the right pot size for your plant. Know when to repot and what size to move up to for healthy root growth.

Get Pot Size Recommendation

Select your plant species and current container size to get a recommendation.

Select your plant details and click Get Recommendation.
Signs your plant needs repotting
  • Roots growing through drainage holes or circling the bottom
  • Water runs straight through without absorbing
  • Growth has stalled or slowed dramatically
  • Plant tips over or becomes very top-heavy
  • Soil dries out much faster than it used to

ยฉ 2025 GardenMath. Pot size recommendations are guidelines. Individual plant conditions vary. This page does not store personal data.

How Often Should You Repot?

Most houseplants benefit from repotting every 1โ€“2 years in spring. Fast-growers like pothos and philodendrons may need annual repotting. Slow-growers like snake plants and ZZ plants can stay in the same pot for 3โ€“5 years. Never repot a plant that's stressed, recently moved, or in active bloom.

How Much Bigger Should the New Pot Be?

The standard rule is to go up by 1โ€“2 inches in diameter (2โ€“4 inches for larger plants). Going too large is a common mistake โ€” excess soil retains too much moisture and can cause root rot. The roots should comfortably fill their new home within one growing season.