- Fri Aug 02, 2019 1:54 pm
Dig it as fdeep as you can say 16" min, place in a pool liner, I put old plastic pots and buckets with holes in upsidedown in the bottom to act as a water reservoir, if you can build in a low point with a drain (i reinforce the liner at the low point, cut a round hole through that and plug it with a cork then have a plastic tube to the surface to get access to the cork and act as a water level to see how deep the water is in the bog) so you can drain the bog in winter, or if it gets too full of water for long periods in other seasons.
Fill with your usual CP mix, water and plant up with plants that will survive your winters, or look to cover it in winter if necessary.
To a large extent digging the hole is the easy bit, ongoing maintenance is necessary to keep it looking good. Divide the plants as necessary, replace the soil if you are growing specimin plants every few years or if 'normal' plants are enough for you, you can save money by reinvigorating the mix every few years as it needs it with sulphur to lower the PH (careful as too low acidity also burns the plants), pine bark to release tannins and acidity and open the soil texture to allow oxygen in. Most bogs degrade/settle over the years so do need re acidifying, turning over and the soil texture opening with some material to let the air into the roots. As the bog looses acidity the peat degrades and releases nutrients to the soil which you can see by the substrate getting more powdery as it degrades, and of course nutrients are not good.
Most plants are lost due to lack of oxygen to the roots, or rot due to being too wet in winter.
That works for me very well but there are of course many variations. , the minimum depth you can get away with is about 9" but you will be watering quite a lot.
Hope that helps