Penstemon barbatus - Beard tongue

Fertilize Penstemon barbatus : During the autumnal months we recommend planting a good quantity of mature manure, or earthworm humus, at the base of our shrubs.

continental : The Penstemon barbatus needs direct sunlight, even for many hours a day.
We suggest growing these plants in the garden; during autumn usually they don’t need protections if the minimum temperatures are above -5°C.

alpine : These plants prefer very sunny locations, where they are exposed to sunrays for most of the day.
The Penstemon barbatus stands minimum temperatures some degrees below zero. If the nocturnal minimum temperatures are very harsh it’s advisable to protect them with a non-woven fabric.

mediterranean : This plant needs to be exposed to direct solar rays.
We suggest growing the The Penstemon barbatus in the garden; it can stand without problems minimum autumn temperatures.

continental : We suggest watering quite frequently, every 1-2 weeks. In this manner it will be kept fairly moist, without being soaked with water. Usually 1-2 buckets of water are used.

alpine : Watering should be done pretty frequently and regularly, but without exceeding: let’s remember to we the soil thoroughly and let it dry before giving it more water. Let’s irrigate every 2-3 weeks using 0-1 buckets of water.

mediterranean : Watering in this period of the year must be very frequent, even every 0-1 weeks, so that the soil is always slightly damp. For average dimension plants we suggest using about 2-3 buckets of water.