Today’s class with Tom Combs covered everything the homeowner needs to know about dormant spraying. Tom was a wealth of information, and made it seem easy and accessible to the novice. He stressed that if we could manage to dormant spray three times, we could mitigate many problems with our fruit trees. He suggested we aim for Thanksgiving, early January, and right before bud break as a minimal spraying schedule. And if that sounds too much to manage, then the last one in late winter is the most important.
The weather forecast this week is showing some pretty decent weather, so if you haven’t gotten around to doing your dormant spraying, then this is your week! Remember you only need three hours of dry weather following spraying and you’re fine.
A question was asked today about crystals in the solution. The shelf life of Bonide’s Liquid Copper is fairly long, as long as it doesn’t freeze. If you are storing these kinds of products in the garage or a garden shed, that may not be enough to keep them from ruination during freezing weather (as we had this past December). Tom said to shake the bottle – you will hear crystals rattling around if it froze; sorry to say it will need to be replaced.
Here is Tom’s Ideal Fruit Tree Spraying Schedule:
- Fall (as soon as leaves fall off); spray with Liquid Copper (1 Tbsp/gallon); this helps control bacterial blights, leaf curls, and other fungal diseases. Spray the ground and tree thoroughly. Tom recommends adding 1 tsp of Turbo Spreader Sticker to this mix to enhance its effectiveness.
- Winter (when trees are dormant – around Super Bowl Sunday); spray with Liquid Copper (1 Tbsp/gallon); this helps control bacterial blights, leaf curls, and other fungal diseases. Spray the ground and tree thoroughly. Do not mix with oil. Add Turbo Spreader Sticker as noted above.
- Winter (when trees are dormant – around Super Bowl Sunday); spray with All Seasons Spray Oil (5 tbsp/gallon); kills overwintering insects on dormant trees. Do not mix liquid copper together with oil. Let the copper dry on the tree before spraying the oil.
- Spring 1 (when buds start to swell); spray Liquid Copper (1 Tbsp/gallon); Helps control bacterial blights, leaf curls, and other fungal diseases. Add Turbo Spreader Sticker as noted above.
- Spring 2 (7 days after Spring 1 application); same application as Spring 1
- Spring (after 2/3 of the flower petals have fallen); spray with Fruit Tree Spray, Eight (permethrin), or Captain Jack’s Dead Bug Brew (Spinosad); follow label instructions; this application of an insecticide helps prevent insects from attacking the fruit and trees.
The above basic applications should control the most common diseases and insects affecting fruits containing pits. If other problems should occur, here are some suggestions of sprays to use:
- Fruit Tree Spray – controls insects and disease
- Orchard Spray – controls insects and disease
- Eight - controls insects
- Fung-onil – controls disease
- All Seasons Spray Oil – controls insects
- Captain Jack’s Dead Bug Brew – controls insects
- Traps – for apple maggot and coddling moth
These sprays are all useable on edibles, vegetables included. As always, follow the label when applying these sprays, paying special attention to the amount of time necessary between the final spray application and harvest.
There is so much more from this class that I could write about, but this post is long enough. Watch for future posts about a Summer Spray Guide, Captain Jack’s Dead Bug Brew, and more!