Is the heat wearing you down? It's affecting your plants too, especially those plants that you have just planted within the last month or so. Rapid root establishment is crucial in the first 3 months of planting. The goal is to establish balance between the roots and the canopy. In order to do this, the root system needs to grow quickly. Roots grow quickly when watered properly and most root failure occurs in the first 3 months due to improper watering. A water stressed plant in the first 3 months is vulnerable to decline, disease and insect attack in the future. So start some watering, especially in early morning or late evening.
When watering by hand: Build a soil ring/basin at the drip line of shrub. Fill the basin 2 to 3X’s, 20 to 30 minutes at a time and let the water soak in.
For larger trees & shrubs: Apply a slow trickle of water for 45 minutes around the drip line of the plant.
Avoid overhead watering. Most plants absorb water through the root system as opposed to the foliage. Overhead watering can also lead to diseases.
Do a moisture check: Use your finger to test at least 2 to 3 inches into the soil at the base of the plant. If it is dry, you need to water. If it feels moist, your plant is good for the day.
A general rule of thumb is to water three times a week for the first month of planting something.