11.70 Zones and zone axes. As discussed in Chapter 9, a set of faces parallel to a common direction defines a zone. We designate zones by the common direction, which we call the zone axis. Figure 11.70 shows examples of tetragonal, hexagonal, and orthorhombic crystals. The green faces in the tetragonal crystal (Figure 11.70a) form a zone. The ...
They perform best in USDA growing zones 9-10, but can grow in zones 8-11. If you have a location that tends to stay between 50-90 degrees during the daytime and that rarely drops below 30 degrees, your blue java should thrive. It's tolerant of heat as well, taking 100-degree days like a champ if well-watered.