As temperatures rise across the country, gardens need extra attention to keep plants, lawns, and vegetables healthy. A florist has warned that common mistakes during hot weather can cause lasting damage to your outdoor space.
Expert's top tips for watering
David Denyer, a florist specialist from Eflorist, says that even a short burst of extreme heat can harm fragile flowers, especially those in pots or freshly cut. He advises watering either before 9am or after 7pm.
“Midday sun evaporates water quickly and can even scorch foliage. Morning watering is ideal. It gives the soil time to absorb the moisture before heat sets in,” he said. Watering during cooler hours helps plants absorb moisture effectively and avoids leaf damage or water loss.
Deep watering and shade
David stresses the importance of watering slowly and deeply, not just a quick sprinkle on the surface. “Surface watering doesn't cut it. Focus on slow, deep watering at the base of plants. For containers, make sure water reaches the roots by soaking the soil thoroughly,” he explained. This directs water to where it's needed most, keeping roots hydrated during peak heat.
Plants also need a break from the blazing sun. Move potted plants to shaded patios, under trees, or behind taller plants. Use garden fleece, parasols, or an old sheet to protect delicate flowers during the day.
Caring for cut flowers and potted plants
Indoor blooms are not safe from high temperatures either. David advises moving cut flowers indoors, away from direct sunlight or warm appliances. “Recut stems at a 45-degree angle and place in fresh, cool water, changing it daily. Add flower food if you have it, or a teaspoon of sugar and a few drops of lemon juice as a homemade alternative,” he said.
For container plants, grouping them together helps them retain water better. This is especially useful on patios or balconies where pots are more exposed. “This reduces the rate of evaporation and creates a mini microclimate to keep soil cooler and moister for longer,” the expert said.
Plants that need extra care
Some plants are more vulnerable to scorching temperatures. Hydrangeas, with their large leaves, can droop suddenly. Peonies and begonias suffer from harsh sunlight and dry conditions. Even hardy roses need frequent watering and some shelter when it's very hot. Recently planted bedding flowers, which are still establishing roots, are at the greatest risk and need the most care.
