All grasses are allergenic, but some are more allergenic than others. Grasses release pollen when they flower, which is why it helps to keep grass cut sort. Rye grass is doubly rough on people with allergies because it's also prone to mold. It's a popular choice for lawns, and is also found in pastures, meadows and on roadsides.
Rye grass facts:
- Appearance: Rye grass grows in bunches, with flat or slightly rolled leaf blades. The grass can be anywhere from 1 to 10 inches long, depending on whether or not it's maintained. When it flowers, you'll see the blooms on stalks that are 2 to 6 inches tall.
- Peak time: Rye grass flowers in the summertime, from around June to August.
- Location: You'll see a lot of rye grass in the northern United States -- it likes dry and cool temperatures.