I plant chokos every few years here; not because they are biennial but because the geese and chooks eat them regularly and they never seem to get ahead of the predators.
Choko (or chayote) is a vine crop that is known to be very hardy and bears in HUGE quantities. I love the flavour, although not everyone does. In the past I have used them to make pickles, steamed with other vegetables and to bulk up sauces and pies (apple pie can be made with just one apple and lots of chokos. They take on the flavour of any fruit or vegetable they are cooked with so the possibilities are endless. They are so useful in the kitchen that we are trying to grow them again. They can also be used as animal food, and so can the leaves.
We planted them in a big pot this time, straight into a mix of compost from the chook pen (made up of cardboard, food scraps and chook poop) and sand. The chokos we planted are three chokos in a bag that were left to fend for themselves at the back of the cupboard. They developed long runners to push out of the bag and try to find water or soil, these runners may sprout leaves and grow, or we may have to wait until a bigger sprout pushes up from the base. The whole choko is buried in a shallow trench in the pot with minimal cover over the sprouting end.
It is easy to get discouraged by the amount of plants our animals eat, but we keep trying.