22 plants that need little water
The catalogue ranks watering from 1 to 5; these are the two driest tiers, a base interval of two weeks or more, and none of them takes frost. The number in the table is the baseline at medium light in a normal season: a south window in July shortens it, a cool room in December lengthens it.
In the table, watering runs from 7 to 35 days at medium light; 0 of the 22 want humid air.
| Plant | Water | Light | Humidity | Temperature or hardiness |
|---|---|---|---|---|
| Gold Lace CactusMammillaria elongata | every 21–35 days | Direct sun | Low | 10–32 °C |
| Jade plantCrassula ovata | every 14–28 days | Bright | Low | 10–27 °C |
| Aloe vera | every 14–21 days | Bright | Low | 10–30 °C |
| Burro's-tailSedum morganianum | every 14–21 days | Direct sun | Low | 10–30 °C |
| Elephant bushPortulacaria afra | every 14–21 days | Direct sun | Low | 10–30 °C |
| fire stickEuphorbia tirucalli | every 14–21 days | Direct sun | Low | 10–30 °C |
| GasteriasGasteria | every 14–21 days | Direct sun | Low | 10–30 °C |
| Mexican SnowballEcheveria elegans | every 14–21 days | Direct sun | Low | 10–30 °C |
| Mistletoe CactusRhipsalis baccifera | every 14–21 days | Direct sun | Low | 10–30 °C |
| paddle plantKalanchoe thyrsiflora | every 14–21 days | Direct sun | Low | 10–30 °C |
| Ponytail palmBeaucarnea recurvata | every 14–21 days | Bright | Low | 10–30 °C |
| Rosary VineCeropegia woodii | every 14–21 days | Direct sun | Low | 10–30 °C |
| Snake plantDracaena trifasciata | every 14–21 days | Bright | Low | 10–30 °C |
| Spineless yuccaYucca gigantea | every 14–21 days | Bright | Low | 10–30 °C |
| Tree AeoniumAeonium arboreum | every 14–21 days | Direct sun | Low | 10–30 °C |
| ZZ plantZamioculcas zamiifolia | every 14–21 days | Low | Medium | 15–30 °C |
| Crown of thornsEuphorbia milii | every 10–18 days | Direct sun | Low | 10–35 °C |
| Cast iron plantAspidistra elatior | every 10–14 days | Low | Medium | 10–25 °C |
| Dragon treeDracaena marginata | every 7–14 days | Bright | Low | 10–30 °C |
| Flaming KatyKalanchoe blossfeldiana | every 10–14 days | Bright | Low | 10–28 °C |
| String of pearlsCurio rowleyanus | every 10–14 days | Bright | Low | 10–28 °C |
| Moth orchidPhalaenopsis amabilis | every 7–10 days | Bright | Medium | 18–28 °C |