Fall and Winter Control of Pests and Disease in the Landscape

The fall and winter season provides an opportunity to control pests and disease in the garden. Fire Blight is a bacterial disease that affects certain species in the rose family, especially apples, crabapples and pears.  Applying Bonide Copper Fungicide while the trees are dormant is one method of control.  Copper sprays are toxic to many species of bacteria and should be applied prior to bud break while trees are still in dormancy because they may damage leaves and young fruit.fireblightf1 bonide-copper-fungicide
Control the overwintering stages of many insects on trees and shrubs with All Season’s Spray Oil. Be sure that the air temperature is above 35 degrees F and do not apply if plant tissues are wet or rain is likely. The oil will smother overwintering aphids, spider mites, eriophyde mites, scale and their eggs and larvae.

eriophyid_mites all-seasons
If you had problems with powdery mildew or other fungal leaf spotting on lilacs, aspen and maples, be sure to clean up any leaf debris and dispose of it. Clean up of affected leaves is one of the most effective controls of powdery mildew. It is best to avoid overhead watering of the affected plants during the growing season if possible.
Most pests and disease problems result from stress to plants. In Colorado our greatest stress factor for plants is drought. Remember to continue watering plants in your landscape through the winter when temperatures are above normal and precipitation is below normal. Water mid-day when temperatures are in the 40 to 50 degree F range. During prolonged dry periods, water at 3 to 4 week intervals.

Make it Merry and Bright

92b6e661f7fd05e2a0faf2f2face96f3 Festive decorations set the mood for holiday celebrations. The fresh scent of pine and cedar boughs brings forth memories of evenings spent with friends and family, and excitement for the gatherings to come. Wreaths and garlands made up of fresh cut evergreens have a long-standing tradition of welcoming visitors to our homes. A wreath can also serve as a centerpiece. Simply lay it flat on the table and place pillar candles in the center. Add ornaments and ribbon to suit your style. Similarly, boughs strewn down the center of table, accented with pine cones and berries, will add charm to your holiday table. There are few tricks to keeping fresh cut wreaths and greens looking nice, in our dry climate. Before decorating your wreath, spray it with Wilt Stop. Wilt Stop reduces moisture loss from the needles, keeping your wreaths and garlands looking fresh for a longer period of time. Display wreaths and garlands in shaded areas. Direct sunlight will dehydrate them quickly. If you are using them indoors, keep in mind that heat from the fireplace will dehydrate fresh greens and can pose a fire hazard. Limit use of the fireplace, or choose permanent wreaths and garlands to adorn the mantel. It will help to mist them lightly on a regular basis, too.wilt-stopchristmas-wreath

A favorite way to welcome guests is to create a holiday porch pot. Leave the potting mix in your summer planters, and wet it thoroughly. Fill the pot with fresh cut boughs and colorful branches. Add a festive garnish of ribbon, pine cones and holiday trim. Keep the soil moist and your bough filled planters will decorate your home into the New Year. This a great alternative to attempting to keep a living evergreen in your patio pots, a feat which is exceedingly difficult in our climate.christmas-tree

We can’t forget about the centerpiece to our holiday décor, the Christmas tree. Fresh cut Christmas trees bring out the holiday spirit in everyone. There’s nothing quite like the feeling generated by admiring a beautifully lit tree, filled with decorations that often span generations in a family. If you can, select your tree from a store where they are kept indoors. Your tree will have experienced less exposure to the elements, resulting in greater moisture retention in the needles. Your tree should receive a fresh cut and be placed in water within 20 minutes. Otherwise, the cut will seal and the tree won’t be able to draw up the water. It’s a good idea to wait 24 hours before decorating the tree, just to be sure it is drawing water. Be sure to use a tree stand with a large water reservoir and check to see that it is filled regularly. If the basin dries out just once, the tree will dry out quickly. Crispy Christmas trees are not only unattractive, they pose a fire hazard in your home. A few other tips include; display the tree out of direct sunlight and away from heat vents. Don’t leave the lights on when the tree is unattended. Disposal will be made easier if a tree bag is placed under the stand before the tree is set up. Then, when it’s time to take down the tree, just slide the bag up to prevent dropping needles through the house as it is removed. That’s what I call “merry.”