Archive for the ‘Crabapple’ Category

Protect New Trees From Winter Sunscald

Across the northern U.S. and Canada, cold temperatures can damage many plants. Wide fluctuations in temperature can be particularly detrimental to newly planted landscape and fruit trees from late fall to early spring.  Street trees are particularly susceptible. Sun scald is described by elongated, sunken, dried, or cracked areas of dead bark, usually on the […]

Live Cut Foliage And Berries For Home Holiday Decorations

Many conifers make great cuts for indoor and outdoor Christmas decorations. Foliage choices: Eastern red cedar and many other junipers, white pine, Norway spruce, Colorado spruce, Balsam fir, Canadian hemlock, Arizona cypress (and cultivars ‘Carolina Sapphire’ and ‘Blue Ice’),  and False cypresses (C. pisifera). Needle retention varies among species. For example, Norway spruce and balsam […]

Eliminating Messy Fruits From Large Landscape Trees

Messy fruit from yard trees are dreaded by property owners as well as park and city employees. Some notorious culprits are sweetgums, sycamores (planetrees), oaks, mulberries, persimmons, and (female) ginkgoes. Fruits include hundreds of hard nuts or pulpy, smelly, and potentially hazardous covering sidewalks, driveways, and parking lots. Foliar sprays are available to reduce or eliminate […]

Powdery Mildew Disease Resistant Cultivars

Gardeners have learned to associate certain plants with a troublesome disease(s). Powdery and downy mildews have become epidemic in many regions of the U.S. Best ways for managing mildew diseases are prevention, good cultural practices, and spraying.. First, avoid planting susceptible cultivars. Plant in the proper location and space plants far enough apart so they’re not touching. Surrounding […]

Five Simple Pruning Tips For DIYers

Gardeners are frequently scared about making pruning mistakes. There are lots of gardening books filled with lots of before and after photos. Let’s face facts…your yard tree or shrub does look like the ones pictured in the pruning book. Here are my simple 5 steps for pruning: Why and When to prune: You can prune a […]

Landscape Trees With Messy Fruits

              Fruit avoidance is on the mind of many property owners when purchasing trees and shrubs for their yard. Many like crabapples, mulberries and Chinese (kousa) dogwoods produce fleshy or pulpy fruits that mess lawns, walkways and stain parked cars. Many, not all, are non-native and foraging birds and […]

Pest Alert: Japanese Maple Scale Becoming A Serious Problem

  Japanese maple scale is a new pest in Tennessee and surrounding states. It infests many more plant species than just Japanese maple. The insect’s small size and ability to blend in naturally with tree bark makes it challenging to detect until populations are high and it has infested large landscape and neighborhoods. Japanese maple scale […]

Preventing Powdery Mildew Disease On Summer Plants

Powdery mildews are serious fungal leaf diseases infecting many garden plants. Each one is host specific. The powdery mildew that attacks summer phlox does not infect zinnias or pumpkin vines. Powdery mildew disease on crape myrtles does not attack lilacs or roses. In recent years new powdery mildew diseases have popped up on dogwoods and […]

Three Beautiful Ornamental Crabapples

Crabapples (Malus spp.) get a bad rap! Many gardeners associated them with the old diseased and pest prone varieties planted a half-century ago. Modern cultivars make nice small ornamental trees. The new cultivars exhibit exceptional resistance to five serious diseases of crabapples: apple scab, fire blight, cedar-apple rust, leaf spot and powdery mildew. Three of […]

Japanese Beetle Traps – Useful Monitoring Tool

A decade ago garden centers sold thousands of Japanese beetle traps until somebody questioned why anyone would want to lure this summer pest into their garden. Yes, the traps do work and may catch hundreds per week. You also attract hundreds more to feed on your plants’ flowers and leaves and, later in the year, the larvae will feed in […]