Ask a Question
Notify Me On Question Update
Email this Question
My pear tree has dead stems that curl downward. What is happening?
Rate This FAQ
Your pear tree possibly has a bacterial disease called fire blight. Fire blight is one of the most destructive diseases of apple and pear trees. Cool wet springs are the ideal conditions for this pathogen to spread. Fire blight primarily infects blossoms in spring time, and is spread primarily by insects but also by wind and rain. Spring symptoms include blackening on leaves, petioles and stems. The summer symptom that you see show up as dead brown foliage on entire branches, with the tips curving downward forming a shephard’s hook. Eventually, the pathogen moves down into the branch and forms cankers, which are sunken, dead areas of bark. Bacteria can sometimes be seen oozing out of a canker, especially in spring.
Homeowners can manage this disease using cultural practices. In winter or early spring, prune out all dead wood and remove it from your property. Prune out infections 8-12 inches below the diseased tissue and sterilize your pruning equipment between each cut with a 10% bleach solution or alcohol. In spring, scout for symptoms and prune out infected twigs and flowers as early as possible. If necessary, apply a copper spray when at ½” green tip. Follow the application guidelines on the pesticide label.
Submit Your Suggestion
Other Questions In This Topic
- I have grass growing in my myrtle(I know it has another name but I can't think of it) and I would like to get out of there. How can I do that without killing the ground cover that I have?
- Do you have some pruning tips for ornamental and shade trees?
- Does it help to aerate in the spring and fall? Also if there is a lot of dead grass and thatch build up would it be beneficial to power rake in the spring?
- Is There Any Way To Eliminate Borers That Leave What Looks Like Sawdust At The Base Of Our Aspen Trees?
- I have a curly willow that was topped about four years ago. Now it needs to be trimmed. Can I cut the branches back to where they were cut last?
- My vinca minor has numerous yellow leaves this year. My husband keeps dumping water on it, thinking it needs more since it is yellow and at some instances brown. Are we watering it too much, or is it missing a nutrient that needs to be added? HELP!
- I have several Dwarf Blue Arctic Willows in my yard. This year they were full of some kind of wasp or bee. I waited until winter and the leaves dropped off to see if there was a hive or nest and there does not seem to be one. In looking for the nest I noticed some small black bugs on the wood. What should I do, if anything and are the two pests related in any way?
- I have a son that lives in west Eagle Mt. We Put in sod for a lawn about two years ago and for two seasons it did great. Half of it is now dead and the other half is struggling. Prior to putting down sod, the ground was thoroughly tilled and lots of compost material was added (the kind that is made available in some green recycling yards and mixed with treated effluent from the sewage treatment plant.) Nitrogen was also added to the soil and the lawn was watered regularly. What has happened and what can I do to get a good lawn here?