Which of the following statements is true?
a. Annuals are used as surface material.
b. Annuals are used as ground covers.
c. Annuals are used as border plants.
d. Annuals are used all of above purposes
a. Annuals are used as surface material.
b. Annuals are used as ground covers.
c. Annuals are used as border plants.
d. Annuals are used all of above purposes