Penstemon barbatus - Beard tongue

continental : Let’s water every 2-3 weeks, so that the substratum is always quite moist. If the temperatures are very harsh, during the winter, it isn’t necessary to water. Wet with 1-2 buckets of water.

alpine : We advise watering the The Penstemon barbatus regularly, but not too often, keeping the soil damp, using 0-1 buckets of water; during this period of the year watering every 3-4 weeks could be enough.

mediterranean : The Penstemon barbatus always asks for a slightly moist soil: therefore we should water often, about every 1-2 weeks, wetting the substratum deep down. Normally 2-3 buckets of water are used.

continental : These plants need, for a balanced development, to be grown in a sunny place.
We suggest, during the coldest months of the year, to grow these plants in a sheltered place, where the freezing is not too intense.

alpine : Plant which needs to be exposed to direct sunrays.
These plants can stand short frosts, but during the coldest months of the year we suggest covering them with a non-woven fabric, or move them to a cold greenhouse.

mediterranean : We advise locating these plants where they can be directly exposed to solar rays.
The Penstemon barbatus can stand the cold, therefore it can be planted in full ground in the garden.

Fertilize Penstemon barbatus : It’s not necessary to give fertilizer to shrubs during the winter.