Is Agapanthus Winter Hardy? There are two main types ofAgapanthuses: deciduous and evergreen. Deciduous species appear to be hardier than evergreen, but both can survive surprisingly well in cooler climates in spite of their origin as South African natives. Agapanthus is a colorful, flowering perennial that is best grown in warm climates. Learn how to grow this easy-to-care-for plant. In its native region, Agapanthus ranges from moist grasslands to rocky mountain slopes. The genus contains six distinct species — two evergreen and four deciduous — which vary slightly in their coldhardiness and physical characteristics. 1. Evergreen Agapanthus. Foliage: Retains its strap-like, green leaves all year in mild UK climates, providing architectural structure even in winter. Hardiness: RHS H4 – hardy in southern and coastal areas; requires mulch or winter protection in colder regions. Agapanthus, Lily of the Nile, is known for being a great summer-flowering, butterfly-attracting perennial in warm climates.Our goal is to find cold-hardyagapanthus plants to expand their use as garden perennials northward...so far, we have trialed 130 different aga. Coldhardiness: Agapanthus umbellatus Ovatus Blue is moderately hardy (down to about –5 °C). In colder climates, protect with mulch or move to a sheltered location. Container cultivation: Well suited to pot growing. Learn how to grow agapanthus, including choosing, planting, propagating and overwintering plants. In the colder edges ofAgapanthus’ hardiness zones, in zones 7 and 8, mulch thickly in winter to protect the roots. Give 8 – 12” of space between plants. Agapanthus bloom the most when pot-bound, so in pots, err on the smaller side for containers. Exceptionally coldhardy. Creates a powerful display when planted in mass, as well as add striking color to any container. The foliage ofAgapanthus may freeze back in the northern portions of their range. A protective breathable mulch will help to ensure winter survival in cold climates. The labels indicate coldhardiness from zone 8 through 11. If you live in a cooler area, you can grow Agapanthus in containers and bring them indoors when winter arrives. Be careful to avoid overwatering in winter.
