North America, with a diverse range of environments and climate zones it makes a wonderful place to see and discover all manner of different plants. One plant family in particular, the Cactaceae (Cacti) family is endemic to the Americas.
For many years exotic gardening enthusiasts in temperate climates have long searched for hardy cacti and succulents. One highly recommended cacti for temperate gardens is the Opuntia Polyacantha, known commonly as the plains prickly pear, it is found naturally on the great plains and prairies of the US and Canada. Given the harsh continental climate with ragingly hot summers and bitterly cold winters it fares well in a temperate climate winter.
Another gem from North America is the Echinacea Purpurea, with its bold flowerheads it has become a firm favourite in the cottage garden. It is fairly easy to grow and prefers a freely draining site. It has been given recognition from the RHS as being perfect for pollinating insects
Californian Lilac (Ceanothus) is a much loved and commonly used garden shrub in the UK. It has lovely clusters of electric blue, honey scented flowers in the spring time. It is an evergreen and has small dark green leaves and stems the year round. It attracts lots of bees and is generally a fast growing but relatively short lived shrub.
Obviously this is merely a minute selection of all the wonderful plants that originate from North America but they are certainly gems and highly recommended for temperate gardens.