Horticultural peat is partially decomposed plant material harvested from bogs. It is lightweight, acidic, and able to hold a great deal of water, but it adds little plant nutrition.
Peatlands form slowly over thousands of years. They support specialized wildlife and store enormous amounts of carbon. That makes using less peat a worthwhile garden experiment.
Try these alternatives first:
- Finished compost adds organic matter and some nutrients.
- Leaf mold improves water retention and soil structure.
- Shredded leaves protect the surface while decomposing in place.
- A labelled peat-free seed or potting mix gives container plants a consistent blend.
If an adult chooses peat for a specific plant or mix, follow the product directions. Dry peat can be dusty and difficult to wet. Moisten a small amount gradually in a container while avoiding dust; do not fill a whole plastic bag with water or till a large wet bale into soil without a soil plan.
Peat's acidity does not reliably turn garden soil into ideal blueberry soil. Test soil pH and use the recommendation from a local laboratory or extension service.
Fascinating Facts!
- Peat forms where waterlogged conditions slow the decay of mosses and other plants.
- Peatlands cover only a small share of Earth's land but hold about one-third of its soil carbon.
- A living bog is an ecosystem, not merely a supply of potting material.