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Aspen Lawn and Landscape Blog
2 years 8 weeks ago - By Ashley \\ Landscape
Pre-emergent herbicides are a good alternative to weed mat fabric. It is important to have the beds throughly cleaned of weeds as the pre-emergent will prevent any weed seeds from germinating. However, it does not affect any weeds that are already established and growing. It is a good alternative to weedmat, in that weedmat products do not prevent weeds from growing on top of the mat and those made of plastic inhibit air and water flow. Pre-Emergent can be worked into the soil or applied above the mulch dressing.
2 years 8 weeks ago - By Justin Simpson \\
Posted by Kstate Turfgrass and extension blog- 3/24/11
This is a tricky question. The trouble is, unlike smaller plants like wheat, tomatoes, or soybeans, there aren’t many studies out there to tell us about tip blight “thresholds.” As a general rule, if a tree has at least 30-50% of branches infected, the fungus is pretty well entrenched and it will be difficult for fungicides to really knock the disease down. And, if there is a lot of canker type infection, it is hard for fungicides to work. If a smaller portion of the canopy is affected, and it is mostly the tip-blight phase, fungicides are more likely to be successful over time. Finally, consider the aesthetics and site-enhancing value of the tree. In trees where the disease is caught early, and fungicides are used at the right time each year for multiple years, the disease can be managed successfully and it might be worth the investment.
7) Okay, so what is the right time?
The critical time for fungicides is when the new shoots are expanding in the spring. If fungicides are applied at this time, new disease can be prevented. It is not a one-shot-deal. Fungicides will likely be needed each year to protect new annual growth. Each year, the first application should be made when new shoots start to elongate, which is usually around the third week of April. The tree should be sprayed again 10 to 14 days later, and possibly again 10 to 14 days after that if it is a wet year and the site has a history of disease. The timing should be adjusted slightly depending on host development in the spring, since every year is different. Spraying after this critical time will not be effective, because infection has already occurred and cannot be “cured.” Once you see symptoms it is too late.
8 ) What should I spray, and how should I spray it?
Several fungicides are labeled for pine tip blight (Sphaeropsis/Diplodia). Thorough coverage is essential. A high-pressure sprayer may be needed to deliver the fungicide to the tops of tall trees. Homeowners should consider using a professional tree care service, especially for large trees where getting good coverage is difficult. Commercial products are listed in the website listed above (under #3).
2 years 8 weeks ago - By Ashley \\ General
Best way to control an infestation of bagworms is to spray tree in the early spring when baby caterpillars are just emerging and relatively weak. Timing is crucial, if sprayed even a week late they will be big enough to resist the pesticides. Arborviates and ornamental conifers are bagworms favorites but they also feed on broad leaved shrubs and trees like maples and sycamores.
