Repotting Time Calculator
Last updated: 2026-06-25
Repotting time depends on plant type. Foliage plants every 1-2 years, succulents and cacti every 2-3 years, and fast-growing herbs and flowering plants about yearly.
This calculator estimates the next repotting time from your last repotting date. If roots grow out of the drainage hole, repot regardless of the schedule.
Repotting details
Next repotting time
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| Item | Value |
|---|---|
| Recommended interval by plant type | |
| Growth rate adjustment | |
| Applied repotting interval | |
| Last repotting date | |
| Next repotting date |
This result is a reference estimate based on general gardening guidelines. The best time to repot is spring, when growth begins - and if you see signs such as roots coming out of the pot, repot regardless of the schedule.
How to use
- Select plant type - choose the type closest to your plant from the list.
- Enter last repotting date - enter the date you last repotted. If this is the first time, enter the date you potted the plant.
- View the result - press calculate to see the recommended repotting interval and the next repotting time.
Repotting intervals and timing by plant
Repotting gives crowded roots more room and replaces old, nutrient-depleted soil with fresh soil. Doing it too often stresses the plant; waiting too long lets roots fill the pot until growth stops. Use the recommended interval per plant type as a baseline, then bring it forward for fast growers and push it back for slow growers.
| Plant type | Recommended interval | Notes |
|---|---|---|
| Foliage plants | 18 months | 1-2 years. Sooner if root-bound |
| Succulents & cacti | 30 months | 2-3 years. Slow growing |
| Herbs | 12 months | Fast growing. Yearly recommended |
| Ferns & maidenhair | 15 months | Divide when roots get dense |
| Flowering plants | 12 months | During the rest after blooming |
| Orchids & phalaenopsis | 24 months | Replace moss or bark when it breaks down |
| Tropical foliage | 18 months | Yearly if growing fast |
| Indoor trees | 36 months | Top-dress soil instead once large |
| Growth rate | Factor | Meaning |
|---|---|---|
| Fast | ×0.75 | Brings the interval forward |
| Normal | ×1.0 | Standard |
| Slow | ×1.3 | Pushes the interval back |
The formula is next repotting date = last repotting date + (recommended interval × growth adjustment). When possible, aim for spring (around March-May). Watering needs can change before and after repotting, so use the watering calculator alongside it.
Frequently asked questions (FAQ)
How often should I repot my plant?
Most foliage plants are repotted once every 1-2 years, and succulents and cacti once every 2-3 years. Fast-growing plants may need it yearly, while slow growers go longer. Regardless of schedule, repot whenever roots grow out of the drainage hole or the pot is root-bound.
When is the best time to repot?
Spring (around March-May), when growth begins, is best because the plant grows new roots quickly and suffers less transplant shock. Avoid the peak heat of midsummer and winter dormancy, and it is also better to delay repotting while a plant is in bloom.
What are the signs a plant needs repotting?
Typical signs are roots growing out of the drainage hole or pushing up above the soil, soil that dries out very quickly with more roots than soil visible, and growth stalling with smaller new leaves. When you see these, move the plant to a pot one or two sizes larger.
How much bigger should the new pot be?
A pot about 2-3 cm (1 inch) larger in diameter - one or two sizes up - is ideal. Jumping to a much larger pot at once keeps the soil holding water that never dries, raising the risk of overwatering and root rot. Use fresh, well-draining soil and a pot with a drainage hole.
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Last updated: 2026-06-25