- Plant the barbel
- Water and fertilize
- The heyday of the barbel
- Increase the barbel
- The barbel in winter
The penstemon plant genus belongs to the plantain family and includes more than 250 different species. Some species are annual, others perennial. The growth form also differs considerably. However, all types of penstemon are native to North America.

Plant the barbel
The whiskers like it sunny and warm. It can be planted in full sun and is also ideal for rock gardens. The soil should be rich in nutrients for the high-growing varieties. You can easily enrich it with well-rotted compost or other organic fertilizer. The low varieties also tolerate poor or sandy soil.
Water and fertilize
Water the penstemon only moderately, high-growing and profusely flowering varieties a little more if necessary. The penstemon actually only needs fertilizer in the spring when planting. However, if your garden soil is very poor and you have planted a high-growing flowering variety, then occasionally add some liquid fertilizer to the irrigation water.
The heyday of the barbel
Most species of penstemon bloom in summer, from about June to September, but some species also until October. By regularly pruning back faded flowers, you can extend the flowering period of your plants. Many varieties are excellent as cut flowers.
Increase the barbel
The non-toxic barbel can be propagated by seeds or cuttings. You can sow the seeds directly outdoors in late spring. Alternatively, we recommend growing indoors from February. Cuttings are best cut in late summer.
The barbel in winter
The barbel is only conditionally hardy. Depending on the variety, it tolerates frost down to about - 5 °C or no frost at all. Most hybrids are not hardy. They should give other species good winter protection or hibernate them in an almost frost-free winter quarters, unless you live in a particularly mild area.
The best care tips for the barbel:
- sunny warm location
- water moderately
- fertilize in spring
- suitable as a cut flower
- only moderately hardy
tips
Even hardy varieties of penstemon may only tolerate a little frost. Therefore, always make sure you have adequate winter protection!