All natives love free-draining soil however Hardenbergia will tolerate a wide range of soils from sandy to loam or even clay. Try Sea of Purple as either a stand-alone garden plant or plant it at 1m intervals along fences to great effect. Use Sea of Purple wherever you want to cover large areas quickly. Plant either in full sun or part shade position. Mulching recommended.
Will do best in moist soil however Sea of Purple will normally perform quite well on natural rainfall without any supplementary watering. Water in extended dry periods.
Hardenbergia needs a low-phosphorus, native plant fertiliser. Some Aussie plants growing in poor soils have become good at taking up the small amounts of phosphorus in the soil. If you give them a big dose of phosphorus, you could kill the plant, hence use a native plant food.
Trim to shape after flowering if the plant needs tidying up.
Pests and Diseases
No major issues here. Over-watering may cause fungal problems, so use of a fungicide is helpful. Remove any badly affected stems and rake up dropped leaves and dispose of them. The ‘usual suspects’, aphids, bugs and caterpillars can affect the plant – if you see a problem, see your specialist plant retailer for advice on the right product.