Hebe tetragona is an erect growing whipcord, which can reach 40 in (100 cm) in cultivation. The tiny yellow-green, evergreen leaves completely enclose the stem. White flowers at the end of the branchlets, summer, but seldom seen in cultivation. A hebe fairly hardy in the UK.
Hebe tetragona grows in subalpine areas of the mountains of the North Island, New Zealand. The branches are distinctly four-sided, hence its name. This hebe is uncommon in cultivation in the UK.