This has taken somewhat longer to put in writing than I had planned, but I believe it is worth waiting for. In my last article I finished by talking about raised beds. So here's part two about rock gardens and planting ideas beginning with "Sink or Troughs" as rock gardens.
Sink or Trough:
The concept of growing alpine plants in troughs and glazed sinks caught on in the 1930s. Using a container shows that rock garden plants can be grown almost anywhere, including on a balcony or patio, the plants are also raised above the ground, bringing them in to easy reach. There is a less obvious virtue of course, some difficult alpines which often rot outdoors can survive the winter in the excellent drainage provided by a deep trough.
Many attractive reconstituted stone troughs can be found nowadays - the main feature to watch for is an adequate drain at the bottom. Old glazed sinks can be covered with hypertufa which is made of 1 part cement, 1 part sand and 1 part fine peat blended to a moist mix with water. Place the sink or trough on firm supports in a sunny spot and cover the drainage hole with pieces of rubble and fill to within 2 inches of the top with a typical planting mixture. Allow it to settle for a few weeks and plant up, aiming for a mixture of shapes, sizes and colours. Here you can use choice and delicate types to maximum advantage, but avoid rampant carpeters. Place some rocks between the plants and cover the suface with a 1 inch layer of stone chippings. Water on a regular basis throughout the growing season.
Dry-Stone Wall:
This is certainly amongst my favourites. A dry-stone wall is made without using any mortar. In northern rural areas of Britain you will probably see mile after mile of dry-stone walling built by bonding flat stones together, In the home garden, soil or planting mixture is needed to fill the gaps between the stones. In these cracks, a variety of rock garden plants could potentially grown.
There are actually two varieties of dry-stone wall, the free standing double-faced one which has a central core of soil, and the retaining type used to support a raised bed or face a bank. Building a free-standing wall should be left to a specialist, but to build a retaining type is well in the scope of your normal home gardener. Use limestone or sandstone - a better-to-handle alternative is the dry-walling variety of reconstituted stone block. A wall above 1ft. will need a 6 inch foundation of rubble or concrete. Lay large, flat stones for the lower layers, pushing them together tightly with a fill of planting mixture between the sides and layers of stones. Each stone should slope downwards and backwards, a 10 degree slope is satisfactory. Plant as you go, placing the specimens sideways. Rooted cuttings are generally easier to use than plants that are pot-grown. Pack the mixture all around the roots. When constructing a wall against an earth face, planting mixture should be packed n firmly to fill the area between the rear of your stones and the front of the bank. Spray the wall with water when planting is finished, also water during dry weather until the plants are established. Recommended plants include Alyssum, Aubrietia, Dianthus, Phlox and Thyme for a sunny face and Arabis, Campanula and Saxifraga for the shady face.
Author Resource:
There is a lot more ideas coming in my next article. An incredible amount of my time is spent in my garden but, I am getting older and things are getting harder to do. I have decided to use a company called Gardener London . Up to now they've given me all the help and advice that I have asked for.