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Wisteria floribunda Cultivation | Propagation | General Uses Cultivation Notes: Prefers a good loamy soil in a sunny south or southwest facing position, sheltered from cold winds and from early morning sun on frosty mornings[11, 200]. Plants can become chlorotic on alkaline soils[200]. A soil that is too rich results in excessive foliage at the expense of flowering[200]. Although they are winter hardy to about -20°c[200], when growing in areas with cool summers the plants require the extra summer warmth of a sunny wall if they are to do well[184]. Plants can take a few years to settle down after planting out[219]. Too much shade or too rich a soil are normally the culprits, some form of root restriction can be beneficial[219]. A vigorous climbing plant, supporting itself by twining around shrubs and trees, though it also succeeds as a free-standing shrub, growing to about 2 metres in height. The shoots twine in a clock-wise direction[182]. This species is closely related to W. sinensis[50, 126]. Often grown as an ornamental plant, there are many named varieties[182, 200]. The flowers have a strong perfume which can be sweet or musty according to the variety being grown[249]. The plants flower mainly on short spurs so, if removing unwanted side-branches, it is best to cut them ack to 2 - 3 leaves rather than removing them completely since this will encourage the formation of flowering spurs[249]. Any drastic pruning is best carried out in the spring, immediately after flowering[249]. Plants are very tolerant of even the most drastic pruning and will re-grow even if cut right back to the base[249]. Plants are self-fertile and usually produce good crops of seeds in cultivation, there are several cultivars such as 'Geisha' and 'Royal Purple' that are particularly good at this[249]. Plants in this genus are notably susceptible to honey fungus[200]. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[200]. The plants also form a symbiotic relationship with a mycorrhizal fungus which makes more water, phosphorus and other minerals available to the plants[249]. For further Wisteria floribunda gardening information |
