As the UK endures soaring summer temperatures, houseplants and fresh flowers are feeling the heat. Soil dries faster, stems droop, and maintaining greenery indoors becomes a challenge. However, a simple adjustment—switching to bottom watering—can keep plants flourishing.
Why Bottom Watering Helps in Hot Weather
Lucy Hook, flowers and plant category lead at Bloom & Wild, explains that bottom watering avoids water runoff and shallow watering. In hot weather, soil can become compacted or hydrophobic, repelling water. Top watering often results in runoff, missing roots entirely. Bottom watering draws water up through drainage holes, ensuring the entire root ball gets a deep, even soak. This is especially useful for thirsty plants like Monstera and Bird of Paradise.
Supports Root Strength and Development
Watering from the bottom encourages roots to grow downward, strengthening the plant overall. Fast-growing summer favourites like Philodendrons, Pothos, and Peace Lilies particularly benefit from this deep-rooting support.
Prevents Leaf Damage
Splashing water on leaves can encourage mildew, pests, and rot, especially in heat. Sensitive varieties such as Calatheas, Fiddle Leaf Figs, and African Violets stay healthier when watered from below, as their leaves remain dry and undisturbed, according to Hook.
Reduces Shock and Temperature Stress
Pouring cold water onto warm soil can shock roots. Bottom watering lets plants hydrate more gradually, making it a gentler option for delicate varieties like Ferns, Peperomia, and Maidenhair Ferns.
Builds a Better Watering Rhythm
Because bottom watering soaks soil more thoroughly, it extends the time between waterings—ideal for heatwaves or holidays. Succulents, ZZ Plants, and Snake Plants thrive on this consistent, root-friendly routine.
How to Bottom Water Your Houseplants
- Place your plant (in a pot with drainage holes) into a shallow bowl or sink with 2–3 inches of water.
- Leave it for 15–30 minutes or until the topsoil feels damp.
- Empty any excess water from the saucer to prevent root rot.
- Water every two to three weeks or alternate with top watering if needed.
