According to the Sevin product label:
Cherry Trees: Mix 3.0 fl. oz. of product per gallon of water and spray upper and lower leaf surfaces and between fruit clusters and on small limbs and trunks to the point of runoff where pest appear. Repeat applications as necessary up to a total of eight times per year for tree fruits or five times per year for small fruits, but not more often than once every seven days.
For Roses:Mix 1.5 fl. oz. of product per gallon of water and spray upper and lower leaf surfaces and small trunks, stems and twigs to the point of runoff where pests appear. Repeat applications as necessary up to a total of four times per year for trees and six times per year for ornamental shrubs and flowers, but not more often than once every seven days
Sevin Concentrate is pet safe if used as directed. Pets must be kept out of the area while the product is being applied but can safely return once everything is dry.
For best results, you should apply Sevin Concentrate at least 24 hours before you are expecting any rain. After that point, it will be rainfast and you will not need to reapply.
Once Sevin Concentrate has been mixed with water, the solution needs to be used with in 24 hours. After that it will start to break down and lose effectiveness.
It would not be recommended to apply Sevin Concentrate in high temperatures. It is best to apply in the early morning or in temperatures below 85 to prevent burning the plant.
Sevin Concentrate will not harm birds or other wildlife when applied as directed on the product label. It best applied when animals are not in the area until the application is dry.
Sevin Concenrate has a shelf life of 3-5 years so therefore the bottle you have would not be effective. We would not recommend using Sevin Concentrate for the treatment of spiders as there are better products for spiders. Suspend SC is a great general purpose insecticide for outside perimeter treatments.
Yes you can use Sevin Concentrate to treat for caterpillars on your Boston ferns. Boston ferns are considered to be ornamentals, so Sevin would be safe to use.
When using Sevin Concentrate it can take a few weeks to get the results you needs as this is not a contact kill and need to work through the insect to fully eliminte them completely. Depending on the level of infestation you have we advise to reapply according to label for faster control.
Yes, Sevin Concentrate can be used for spiders. You may also want to take a look at our Spider Control Guide for more tips and information on treating for spiders.
Sevin Concentrate is labeled to kill squash bugs, but it will not kill their eggs. Most insecticides are not able to penetrate eggs so they will only kill insects after they have hatched.