Carnivorous plant to 30 °C to thrive. Carnivorous plants require appropriate nutrient-poor soil. Most appreciate a 3:1 mixture of "Sphagnum" peat to sharp horticultural sand (coir is an acceptable, and more ecofriendly substitute for peat). "Nepenthes" will grow in orchid compost or in pure "Sphagnum" moss. Carnivorous plants are themselves susceptible to infestation by parasites such as aphids or mealybugs. Although small infestations can be removed by hand, larger infestations necessitate use of an insecticide. Isopropyl alcohol (rubbing alcohol) is effective as a topical insecticide, particularly on scale insects. Diazinon is an excellent systemic insecticide that is tolerated by most carnivorous plants.
Types of plant oils means of extracting essential oils. In this process, used, for example, to extract the onion, garlic, wintergreen and bitter almond essential oil, the plant material is macerated in warm water to release the volatile compounds in the plant. Types of plant oils Plant oils or vegetable oils are oils derived from plant sources, as opposed to animal fats or petroleum. There are three primary types of plant oil, differing both the means of extracting the relevant parts of the plant, and in the nature of the resulting oil: Vegetable fats and oils are what are most commonly called vegetable oils.