TREES, SHRUBS (EXCEPT FLOWERING CRABAPPLE) - CALIFORNIA OAKWORM, ETC. Limitations, Restrictions, and Exceptions TREES, SHRUBS Use the higher amount when the larger larvae are present. Apply the specified amount of ACEPHATE 90 SP in 100 gals. water with a hydraulic sprayer. Method Spray Restricted Entry Interval 24 hours Timings As the insects begin to appear.