Non-Aquatic Plants

Disguising the edges of a rigid stream units and informal preformed pools is often difficult as the soil can be dry in these areas. The technique for planting these areas involves procedures which are almost completely opposite to those required for aquatics. Whereas aquatic plants will have no need to develop an extensive root system in search of water, the terrestrial plants will need help in their initial stages to survive and grow in a dry environment, particularly when planted on any form of raised soil bed like a rock garden. At the same time as needing water to grow, these plants also need good drainage in order for oxygen to be available for the roots, an element which aquatics are specially adapted to take in through leaves or roots when present in the pool water.

The steps for planting shown here will assume that the plants are already growing in containers such as rigid or flexible plastic pots. Although the sizes vary considerably from an alpine to a shrub, the technique is basically the same. With most types of soil, especially heavy clay, you should add plenty of coarse grit to the bottom of the hole when planting plants such as alpines that prefer dry conditions, as good drainage is essential and they are likely to rot if the soil becomes waterlogged in winter. In light, sandy soils, they should be happy, but you will need to make sure they are watered regularly until established.

Planting an Alpine

Scrambling alpines can be used to soften and disguise the edge of a pool.

1. Dig a hole slightly larger than the spread of the roots alongside the edge.

2. If the soil is heavy, add a smaller layer of coarse grit to the bottom of the hole.

3. Remove the young alpine from its pot, teasing out a few roots so that they spread more widely into the hole. Spread well drained compost (soil mix) around the roots, taking care not to bury the growing point or stems of the plant. Firm in well as the plant is more likely to establish quickly in dry areas if the soil is in firm contact with the roots. Water well and keep moist until the plant can support itself. Do not water for too long a period as this discourages the young plant from becoming self-sufficient.

4. Top-dress the plant with a collar of coarse grit for a more finished effect.