Croatian gardeners warned about heat‑sensitive plants for summer planting

Popular vegetable varieties such as cabbage family crops (broccoli, cabbage, cauliflower), lettuce, spinach and peas do not tolerate the high temperatures of midsummer and should be sown in early spring or early autumn instead of the hottest months.

Ornamental shrubs and perennials that prefer cooler conditions—such as hortensias, azaleas, rhododendrons, Japanese maples and carnations—also suffer severe transplant shock if planted during peak summer heat, often showing wilting leaves and loss of blooms.

Gardeners are advised to water hydrangeas in the early morning when the soil is cooler; evening watering can increase disease risk. A brief evening check after sunset can confirm whether the plant has recovered from temporary wilting. The variety Hydrangea paniculata ‘Limelight’ is noted for better tolerance of full sun and high temperatures, requiring less frequent watering.

Overall, planting or transplanting heat‑sensitive species in spring or autumn, providing morning irrigation, and selecting heat‑tolerant varieties are recommended to protect garden health during Croatia’s hot summer months.