> from one seed? So a disease could wipe it all out. It depends what you mean by 'wipe it all out' There are plenty of pistachio varieties, grown all over the

> from one seed? So a disease could wipe it all out. It depends what you mean by 'wipe it all out' There are plenty of pistachio varieties, grown all over the planet, so the disease would need to spread far and wide -- but this is what many country's border controls are specifically designed to stop. There's about 30 named fruiting pistachio varieties (compare ~3,000 apple, or ~500 edible banana) so we're at some greater risk, but if you were to ask a random sample of consumers to identify the different pistachio varieties by sight/taste I expect you'd find most would struggle.