- Hebe armstrongii is not hardy
- Overwinter Hebe armstrongii properly
- Overwinter Hebe armstrongii in a tub
While most varieties of shrub veronica or Hebe are bought for their pretty flowers, the inconspicuous varieties Green Globe and Hebe armstrongii are purely green plants. Hebe armstrongii is not hardy and is therefore only grown outdoors once a year.
The Hebe armstrongii (centre) is only grown in pots for several years
Hebe armstrongii is not hardy
In contrast to other Hebe varieties, this variety is only grown once a year, as the flowers are completely inconspicuous. There are a number of different breeds of Hebe armstrongii that differ in growth height.
Since this perennial is not hardy, it is only grown in the garden as an annual. Even with good winter protection, it cannot be overwintered outdoors.
If you want to keep larger specimens of this variety for several years, plant them in a pot. Then you can overwinter this Hebe in a frost-free place, for example:
- basement window
- entrance area
- corridor window
- garage
- conservatory
- Glasshouse
Overwinter Hebe armstrongii properly
The hardy Hebe armstrongii occasionally survives a very mild winter without freezing temperatures. However, in addition to the cold, the high soil moisture usually bothers you.
If you want to try overwintering Hebe armstrongii in the garden, protect the soil with a mulch layer of grass clippings or leaves. Cover the plants with brushwood or fir branches.
However, it is not possible to predict whether this Hebe variety will survive a winter, even if you have provided optimal winter protection.
Overwinter Hebe armstrongii in a tub
Grow Hebe armstrongii in the tub and make sure the plant gets enough light. With too little light, the leaves of the perennial turn yellow. The humidity should not be too high. Ambient temperatures between five and ten degrees at the winter location are ideal.
Water moderately so the root ball never dries out completely. Hebe can also be fertilized fortnightly in winter.
After winter, take the perennial out of its winter quarters and slowly get used to higher temperatures. You may need to repot them when the roots grow out of the top or bottom of the pot.
tips
Hebe armstrongii can be planted very well as a bed border. It is being grown more and more as a grave plant in cemeteries, where it replaces boxwood hedges.