Does salt water affect the growth of plants?

Answer 1

Salt affects the growth of many plants, but not all.

The higher concentration of salt outside of the plant cells in the soil causes water to move outside of the cells to try and equalize the concentration. Some root cells of plants that do not tolerate salt may die, and if bad enough the plant will die. The damage gives the plant a burnt look, often on the leaf edges first. The same thing happens with too much of any mineral.

Some types of plants, such as mangrove trees, can tolerate higher levels of salt and not be damaged. Their cells have a high concentration of salt already in them so the water doesn't move out. Some even separate salt from the water and excrete it through their leaves, roots, and branches.

The most common Herbicides are salt based glyphosate products.

Using salt water to fight forest fires does large amounts of damage to plants, particularly in Australia where fire is an important part of native plant regeneration.

Answer 2

Yes, salt water can negatively affect plant growth by damaging root cells and causing dehydration due to osmotic stress. Plants are sensitive to high levels of salt and may experience stunted growth, wilting, and death if exposed to excessively saline conditions. It is important to avoid using salt water for watering plants, as it can have harmful effects on their health.