When the days get hot, using any type of spray oil for insect control can be a real problem for many nursery growers, commercial applicators and homeowners. Horticultural spray oils can all burn plants when the temperatures get hot.  Mixing any of these oils with fertilizer is almost a sure burn for plant foliage.  Fortunately PLP has an excellent plant safety record.  Commercial pest control companies that are “going green” and who offer all natural services for their lawn and landscape spray programs, appreciate this type of product. 

The following photos were taken on a wide variety of plant material.  Oil sensitive plants like Orchids, Hibiscus, Bougainvillea, and Plumbago that were in bloom, to include Staghorn ferns, Gardenias, and tropical  fruit trees such as Citrus, Guava, Mango, and Banana were all treated with PLP.  All of these plants were sprayed with a tank mix of PLP, a slow release liquid nitrogen, manganese, magnesium, potassium, iron and a spreader sticker. The outside spray temperature at the time of this application was 87° F (field test temperatures have been as high as 93° F with the same results.) The date of application is Oct. 8, 2009; the site is in the Florida Keys.  The heat index over the next 4 days was between 104° to 106°F.  Normally plants would show signs of burning in 3 days. With spray sensitive plants, the flowers always burn before the leaves do. The following photos were taken at 6PM on day four. There was no burn.