Water: According to identification, Agave americana is a drought-tolerant plant, so it does not need frequent watering. On the contrary, wait until the soil is completely dry, then water the plant abundantly and forget about it again for a while.
Soil: The ideal choice is sandy soil, which dries quickly and allows water and air. Buy a ready-made mix for cacti and succulents, or prepare the soil using peat, sand, perlite, and small pebbles.
Container: You can grow this plant outdoors. Otherwise, choose a large pot with drainage holes. Give preference to terracotta or ceramic pots.