Salvia patens is a really pretty and popular tuberous rooted herbaceous perennial. It is native to the highlands of Mexico. Is is a good choice for herbaceous border and grows well in containers and around patios.
Wonderful whorls of large blue flowers are produced on stems rising above the leaf base. The flowers are two lipped, the upper hooded lip is covered in tiny hairs. The flowers emerge from mid-green, funnel shaped calyces.
The leaves are mid green and spearhead-like in shape. The underside of the leaves are covered with tiny glands, these release a strong aroma when the leaves are crushed
Upright stems grow from tuberous root stock. In warmer climates these can be left in the ground. In protected areas, plants have survived frosts to -6°C. However, if you are unsure then it is worth digging them up (as they are tuberous they can be dug up easily) before the first frost and replanting once the threat of frost has diminished.
These Salvia species will tolerate heat and humidity so grow well in climates similar to Sydney's. Despite being tolerant of humidity it is important to ensure there is good air circulation around the plant. They also do better if planted in area with some shade, given the choice choose an area protected from the hot afternoon sun.
Flower colour range include dark and light blue, pink and white forms