Differences between Arabica and Robusta coffee
| Arabica | Robusta | |
| Date species described | 1753 | 1895 |
| Chromosomes (2n) | 44 | 22 |
| Time from flower to ripe cherry | 9 months | 10-11 months |
| Flowering | after rain | irregular |
| Ripe cherries | fall | stay |
| Yield (Lb beans/ha) | 750-1500 | 1100-2200 |
| Root system | deep | shallow |
| Optimum temperature (yearly average) | 59-74° F | 74-86° F |
| Optimal rainfall | 1500-2000 mm | 2000-3000 mm |
| Optimum altitude | 2400-6000 foot | 0-2200 foot |
| Hemileia vastatrix | susceptible | resistant |
| Koleroga | susceptible | tolerant |
| Nematodes | susceptible | resistant |
| Tracheomycosis | resistant | susceptible |
| Coffee berry disease | susceptible | resistant |
| Caffeine content of beans | 0.8-1.4% | 1.7-4.0% |
| Shape of bean | flat | oval |
| Typical brew characteristics | acidity | bitterness, full |
| Body | average 1.2% | average 2.0% |
