Protecting Plants During Heatwaves
Practical Tips for Garden and Potted Plants
With days soaring over 40°C and nights offering little respite, many plants struggle to survive. Ensuring they are protected during heatwaves is crucial. Here are some expert tips to help your plants thrive despite high temperatures and intense sunlight.
Choose Heat-Resistant Plants
Selecting plants that are resistant to heat and drought is essential if you live in an area with hot and dry summers. Mediterranean varieties such as lavender, rosemary, and succulents like agave and purslane are excellent choices. These plants are naturally adapted to withstand harsh conditions and can thrive with minimal water.
Monitor for Signs of Stress
During periods of extreme heat, closely monitor your plants for signs of distress. Symptoms of dehydration include brown-edged leaves, wilting, and premature fading of flowers. If you notice these signs, provide slow, deep watering to help your plants recover.
Use Natural Mulch
Mulching is an effective way to retain soil moisture and keep the ground cool. Organic mulch, such as straw, hemp, or pine bark, can be applied in a layer of 8 to 10 cm. This not only conserves water but also regulates soil temperature and suppresses weeds.
Perform Manual Hoeing
Hoeing the soil helps to aerate it, promoting better air circulation and reducing water evaporation. Be gentle to avoid damaging plant roots. This practice is especially important during drought conditions when the soil tends to form a hard crust.
Watering Techniques
Watering at the right time and using the right method is crucial during heatwaves. Water plants early in the morning or late in the evening to minimize evaporation. Aim the water at the base of the plants to avoid splashing the foliage, which can cause burns.
Shade and Shelter
Creating shade for your plants can significantly reduce heat stress. Use shade sails, nets, or even move potted plants to cooler areas. For potted plants, consider using terracotta pots, which are natural thermoregulators, or install drip irrigation systems to ensure efficient watering.
Eliminate Weeds
Weeds compete with your plants for water and nutrients. Keep your garden weed-free to ensure that your plants get the resources they need to survive the heat.
Grouping and Elevating Pots
Group potted plants together to create a microclimate that retains moisture. Elevate pots slightly using bricks or terracotta feet to improve drainage and prevent the base from overheating.
Fertilization
Using an organic fertilizer low in nitrogen but rich in phosphorus and potassium can make plants more resilient to heat stress. Regular observation and adjustment of care routines will help your plants withstand heatwaves better.
