We would recommend waiting until Tempo SC Ultra has dried completely before watering your garden. Tempo SC Ultra is mixed with water and can be used on flowers, bushes, trees, etc. This product cannot be used on any type of edibles.
Tempo SC Ultra can be applied to ornamentals for aphids when used as directed on the label.
Yes, Tempo SC Ultra is labeled to be used to treat for boxelder bugs to be applied directly to them that have congregated around doors and windows and similiar areas where they may enter the structure. Apply a perimeter treatment as described. For best results, you must treat the infested trees early in the season.
Tempo SC Ultra will not harm plants or flowers if sprayed on them and is labeled for use in those areas for a variety of pests. It is not, however, labeled for use on any type of edible plants in a garden or on a fruit tree.
Tempo SC Ultra is labeled for boxelder bugs and gives specific instructions for treating them. Apply directly to boxelder bugs that have congregated around doors and windows and similar areas where they may enter structures. Apply perimeter treatment as described above. For best results, treat infested trees early in the season.
The treatment should begin before temperatures drop and pests start searching for places to harbor for the winter. Once the bugs have moved into your attic to overwinter you will have limited results with sprays as they will hide in cracks and crevices there and getting to all of these is rare. Your first treatment should be in August, before the weather begins to cool, and continue through November or until the first frost of the Fall. The best treatment for overwintering pests is preventative treatment.
While Tempo SC Ultra will control aphids, it is not labeled to be used as a drench. A great product to use as a drench for aphids would be Dominion 2L Termiticide Concentrate. When using Dominion 2L to treat for aphids you would mix 0.1 - 0.4 fl oz per inch of the trunk diameter in no less than 10 gallons per 100 sq ft of treatment area. You typically want to start about 12 inches from the base of the tree and out to the drip line.