How can I make potted plants more drought-resistant?
Written by
Benjamin Miller
Reviewed by
Prof. Martin Thorne, Ph.D.Making potted plants drought-resistant starts with smart choices in containers and soil amendments. Terra cotta pots have more air, which helps protect from root rot, than plastic containers. I've saved many clients' plants from dying simply by changing the container and adding moisture-retaining amendments. These methods are particularly effective during vacations away from home and during periods of high heat.
Pot Selection
- Terra cotta pots allow air exchange through porous walls
- Choose light-colored containers to reflect heat
- Ensure drainage holes prevent waterlogging
Soil Amendments
- Mix water-storing crystals at 1:4 ratio with potting soil
- Add coconut coir to increase moisture retention 30%
- Include perlite for critical oxygen flow to roots
Surface Protection
- Apply 1-inch gravel mulch to reduce evaporation
- Use marble chips for reflective cooling benefits
- Replenish mulch annually as it settles
To control the heat, move pots to the afternoon shade when the temperature exceeds 90°F. Use plant grouping as a means of creating pockets of humidity. Raise pots on feet to keep air flowing under them. These small changes will keep soil from baking in the hot sun.
Water deeply but infrequently to create resilience in the plants. Soak the pots well until water runs out through the drainage holes, and then allow the soil to dry completely. Water moisture meters can be used to eliminate guesswork. During periods of extreme heat, it is best to water in the morning when temperatures are cooler to avoid excess evaporation. This will train the plant's root systems to search for moisture.
Choose plants that already have adaptations to survive drought. Select varieties with silver leaves, such as dusty miller, which reflect heat. Prefer succulents, which can retain moisture in their leaves. Do not choose plants that have large, thin leaves that evaporate moisture quickly. This provides the right kind of plant to care for, which significantly reduces the need for care.
Read the full article: Top 10 Drought Resistant Plants for Gardens
