H. oreadica grows in the mountain range Pireneus on rocky-sandy soil and at altitudes in the range of 1100–1295 m. Regarding the adult plant behavior, initially has the vegetative state subsequently formed green buds that with the development they acquire color that varies from light pink to dark pink. The flowers produce lots of nectar/resin and are visited by various insects such as ants,bees (Trigonas, Apis), wasps, butterflies, grasshoppers and beetles.The flowering was observed from September to December 2012.Fruit production (November and December 2012) was much lower than the flowers (about 580 flowers per inflorescence) and rangedfrom 3 to 37 per inflorescence.