This grass has little drought tolerance and little winter hardiness. It does have good heat and shade tolerance. It can be planted in soils with a pH between 5.5 and 8.2. Very compatible with legumes.

It is adapted to a wide range of soils and requires only moderate fertility and moisture. It does not tolerate flooding and is only slightly drought resistant. It is a bunch type grass with upright ...

and it has to do with the fact that it is made with only one species of grass: "Perennial ryegrass is what is considered a 'bunch' type grass, meaning that it grows by forming clumps or large ...