Final answer:
Tall fescue has greater low-temperature hardiness than St. Augustinegrass, making the statement false.
Step-by-step explanation:
The statement that St. Augustinegrass has greater low-temperature hardiness than tall fescue is false. Tall fescue is known for its cold tolerance and can handle lower temperatures better than St. Augustinegrass. St. Augustinegrass, on the other hand, is more adapted to warm environments and does not handle cold weather as well.