Growth: average in spring, summer, autumn; in rockery, the speed of growth of Agave macroacantha depends on the presence of fertilizers and a good watering during planting.
Coffea Arabica is easy to grow indoors, makes a very attractive houseplant and if it likes you well enough, it will even rewards you with flowers and berries!
Grow your own Coffee, will take approx 4 years for first harvest. It is actually very easy to grow, indoors. This is surely worth a try for something different.