The arboretum was established in 1994 on four locations across hilly terrain at an altitude of 510 to 670 meters, with stated aims including conservation of endangered species, scientific study and experimentation, education, environmental protection against erosion, and aesthetics. It is technically a pinetum because mainly dedicated to conifers.
The site's natural vegetation includes Acer monspessulanum, Buxus sempervirens, Corylus avellana, Crataegus monogyna, Cupressus sempervirens, Fraxinus excelsior, Genista spp., Ilex aquifolium, Juniperus communis, Prunus avium, Prunus spinosa, Pteridium aquilinum, and Quercus ilex. Timber plantings in the region include Cedrus atlantica, Fagus sylvatica, Picea sitchensis, Pinus nigra laricio or calabrica, Pinus sylvestris, Pseudotsuga menziesii, and Quercus.
Since 1994 the arboretum has planted over 3500 specimens, mainly from seeds, including more than 190 Gymnosperm species and subspecies. A further hundred species are being cultivated in the arboretum's nursery. Some specimens of interest include Araucaria araucana, Calocedrus decurrens, Calocedrus formosana, Cedrus atlantica, Cupressus dupreziana, Cupressus torulosa, Fitzroya cupressoides, Glyptostrobus pensilis, Juniperus occidentalis, Keteleeria davidiana, Keteleeria evelyniana, Metasequoia glyptostroboides, Picea chihuahuana, Pinus attenuata, Pinus elliottii, Platycladus orientalis, Prumnopitys andina, Saxegothaea conspicua, Sequoia sempervirens, Thujopsis dolabrata, and Widdringtonia cupressoides.