Protect Them During Cooler Temperatures

The most important thing you can do in your garden during the cooler months is to go into protect mode. Your fruit trees can become susceptible to peach leaf curl, blight and other damaging diseases. And your delicate outdoor plants, such as hibiscus, azaleas, gardenias and bougainvillea can perish during a hard frost.

Spray at the following intervals:

Once your fruit trees fall dormant (leafless), you will want to spray 3 separate times during the dormant season, a minimum of 30 days apart.

  • Spray 1 - Mid to Late November
  • Spray 2 - New Year's Day
  • Spray 3 - Valentine's Day

We recommend the following: 

Bonide Copper Fungicide and Monterey Horticultural OilBonide Copper Fungicide - Organically treats brown rot, black spot, blotch, downy and powdery mildew, fire blight, leaf spot, peach leaf curl, rust and scab.

Monterey Horticultural Oil - For use on ornamentals, roses, vegetables citrus, small fruits, tree fruits and nuts. Controls aphids, mites, scales, whiteflies and other soft-bodied insects. Can be used year round; while plants are dormant and during the growing season. For use only in home fruit and vegetable gardens, home greenhouses, interior landscapes and in ornamental gardens. ORMI Listed for Organic Gardening.

When spraying, follow these helpful tips:

  • Apply Copper Fungicide a minimum of 24 hours before oil treatment but up to two weeks after
  • On a day without wind
  • Early in the day
  • 24 hours or more before expected rain
  • Sprays should be reapplied after significant rains
  • Last spray should be early February, around the Super Bowl!  
  • ALWAYS before bud break - NEVER after (Bud-break usually occurs mid-Feb. when temperatures begin to warm)

To download a pdf version of this information and additional tips on fruit trees, click the button below:

Fruit Tree Health & Pruning


Ways to protect your delicate plants during cooler temperatures and potential frosts:

DeWitt Frost Cloth to protect Fruit Trees

Thankfully in this day and age, we hear about potential frost warnings in our areas before it's too late. Heck there are even apps, such as ColdSnap that can alert us in advance. The importance then falls on the types of products we keep on hand to protect during the cooler temps. We recommend:

DeWitt N-Sulate Frost Protection Blanket - This medium weight, 1.5 oz. permiable, 10 ft. x 12 ft. fabric is ideal for protecting flowering annuals, bedding plants and vegetables from severe cold and freezing temperatures. Protects from freeze by raising the temperature beneath the fabric by 6-8 degrees fahrenheit . Installs quickly using DeWitt repins or anchor pins. UV Treated and reusable.

Bonide Wilt Stop - Anti-transpirant plant protector. Reduces moisture loss when plants are under stress. Prevents winter kill, wind burn, sunscald, salt damage and drying out. Helps reduce transplant shock.

If you have questions about these products or additional measures you can take to protect your garden during cooler months, stop by your local SummerWinds Nursery to speak with one of our Trusted Garden Advisors! At SummerWinds, We Guarantee Success!