This is a broad term used to describe a range of different plants that live in water or in waterlogged areas such as a bog.
This refers to soil which has been saturated with water, which can happen after prolonged periods of rainfall, or can be due to over-watering, or poor drainage. Waterlogged soil is not good for most plants as it can cause the roots to rot.
Weathering is a type of erosion which can cause damage to plants and is caused by different weather such as sun, wind and rain. Weathering can also be caused by plants when the roots damage rocks and soil.
Any plant growing in the wrong place is considered to be a weed.
Well-drained soil is soil that does not become waterlogged and allows surplus water (which the plant does not need) to drain away rapidly.
These are soils that hold a lot of water and are usually heavy or peaty in composition. They will also dry out much slower than other soils and can even cause disease to occur in some types of plants.
A whip is a slender shoot or plant that does not have branches.
A wilt or wilting is when a plant appears to slump over or hang. This can be caused by overwatering, not enough water or even because the foliage is too heavy.
Worm casts are coils of soil that have been digested by worms.
Wounding is a technique used to stimulate rooting by exposing the inner part of a stem.