Here on the Central Coast we seem to be experiencing a minor heat wave; this means a little extra TLC is needed for landscapes and gardens. Without some human help, a heat wave can wipe out a vegetable garden in just a couple of days.
The high temperatures of a heat wave damage a plant in several ways. First, there's the evaporation of soil moisture, which robs the roots of water. A heat wave will also dehydrate a plant by extracting moisture through the leaves and stem. Finally, the hot rays of the sun can sunburn the leaves, turning them a pale yellow-to-tan color which eventually die and fall off. Protecting your vegetable garden from a heat wave means slowing down the loss of water and minimizing sun damage. Here's how it's done:
Mulch, mulch, mulch │ Mulch is more than a pretty way to decorate a garden. It actually serves an important function in shading tender roots from the sun and slowing the evaporation of ground moisture. Mulch doesn't have to be expensive or fancy to work – bark, newspaper, straw, leaves, grass clippings and compost are affordable and do a great job. Just make sure to keep bark and compost a few inches away from the base of trees and shrubs to discourage insects.
Compost as mulch │ Applying compost to garden beds is a win/win. Not only are plants and soil protected from the elements, compost adds vital nutrients to the soil; increasing porosity and water holding capacity, encouraging a healthy root system. Premium STA Certified Harvest Blend Compost is the perfect choice; Naturally! Click for a map of our trusty dealers
Change how you water │ A vegetable garden can basically be watered in two ways, either at ground level or overhead. During a heat wave, overhead watering with an oscillating or other type of sprinkler head should be avoided. The combination of high temperatures and a hot sun can evaporate up to 90% of that water even before it hits the ground. A better watering solution is to use a soaker hose system, watering through channels, or hand watering the roots.
Other changes that need to be made include -
- Increasing the watering times to twice a day until the temps dip below 90 degrees.
- Avoid watering between 10 am and 7 pm, unless you have a soaker system or irrigation channels. Overhead watering when the sun is beating down on your plants can scald the leaves and kill them.
- Deep water when possible. Deep watering encourages deeper root growth.
Provide shade if possible. To protect more vulnerable vegetable plants, we set up a canopy to shade tender veggies during a heat wave. If you don't own a canopy, sheets draped over 5 foot bamboo stakes can also provide some plant relief.
Plants and soil sometimes need a little extra help from their human caretakers; and periods of extreme heat and/or cold are 2 of those occasions. For more info on compost uses and benefits, visit www.GotCompost.com or Like us on Facebook.
