Aponogeton distachyos
water hawthorn
This pond plant dies right back in autumn, then fresh new growth appears again in spring.
- Position: full sun
- Depth of water: 30-90cm (12-36in)
- Rate of growth: average
- Flowering period: March to July and September to October
- Hardiness: frost hardy (may need protection in winter)
Originating in South Africa, this exotic-looking aquatic will usually flower twice a year. It has a summer dormancy, so is perfect for pairing with water lilies, which can take centre-stage while this one is catching its breath. After emerging from its summer dormancy, water hawthorn produces lots of paddle-like foliage and beautiful white blooms, which usually remain right up until the first frosts. In early spring it will usually start up again, giving another couple of months of colour. The flowers are edible and are said to be a delicacy in Germany where they sell them in tins. It will tolerate a little light shade, but for the best performance it should be planted out in full sun. Please note that the leaves and flowers may be damaged in transit, however the bulb is very robust, so (provided it is not in its summer dormancy) it will put on new growth quite quickly after being planted out.
Cut back after flowering and divide clumps in spring if the plant becomes congested. In milder regions, water hawthorn can be overwintered outdoors, however if your pond is expected to freeze, place the plant in a tub and move it to a cool greenhouse or frost-free, well-lit location before the first hard frosts.