What is the absolute best time to water plants?
Written by
Paul Reynolds
Reviewed by
Prof. Martin Thorne, Ph.D.The timing of watering is what separates success from failure in your garden. Watering at the wrong time can lead to wilting, yellow leaves. Watering at the right time allows the roots to develop deep and strong. Watering at dawn, between 5:00 and 8:00 AM, provides the best start for your plants. Cooler temperatures enhance the roots' ability to absorb moisture effectively.
Dawn Advantage (5-8 AM)
- Soil temperatures range 50-65°F (10-18°C) for maximum absorption
- Evaporation rates stay below 20% compared to midday
- Plants prepare for photosynthesis with full hydration
Late Afternoon Option (4-6 PM)
- Acceptable if foliage dries completely before dusk
- Higher evaporation than dawn but better than midday
- Helps plants recover from daytime heat stress
Your climate dictates these rules. In desert climates, water before 6 AM to mitigate heat. Coastal gardens tolerate watering a little later. Climate-specific: Always check the soil before watering. My Arizona garden tolerates a 6:00 a.m. start, while my Seattle garden does not. Use these as guidelines according to your climate.
Container plants require special care. Since pots dry out most quickly, the best time to water them is in the morning. Use the weight test. Lift containers periodically and assess the moisture level by feeling the texture. By grouping pots, you create protective microclimates. This technique easily saved my herbs last year during the heat.
Read the full article: 10 Essential Tips: When to Water Plants
