Year-Round Horticultural Spray Oil® Summit Year-Round® Spray Oil offers effective control against many destructive insects without the use of synthetic toxins. Year-Round Horticultural Spray Oil® Summit Year-Round® Spray Oil offers effective control against many destructive insects without the use of synthetic toxins. HomeProductsYear-Round® Horticultural Spray Oil Approved for organic gardening, Summit Year-Round® Spray Oil is … Continue reading Year-Round® Horticultural Spray Oil