In the ‘wild’ Primula obconica have a natural chemical in their leaf (Primine). This protects the plants from ravaging insects. However, most humans are allergic to this chemical. Touch Me F1 Hybrid has no Primine. Grow it with confidence. Excellent branching habit. Makes a fantastic pot plant for the cooler seasons of autumn & spring. The plants are quite tough but will need protection through a tough winter.