We're huge fans of squash, and Green Hokkaido is one of the best we've ever grown. It has beautiful blue-green skin, and thick dark orange flesh that's very rich in flavour. The fruit is medium sized (about 6in across) so it needs to be allowed to trail across the ground. You need to leave at least 4ft between each plant, so it's only really viable to grow a few plants if you have a large plot.
If space is at a premium opt for Red Kuri, the fruit is small (and light) enough to be trained up a teepee of canes great use of space.
Which ever one you grow, you'll notice a markedly different flavour from the more common butternut squash you can pick up at the supermarket. Most butternuts have been bred to deliver uniform shapes and early maturity to keep the supermarkets happy, largely at the expense of flavour. Grow your own and you'll see a different side to squash altogether.
Growing Equipment: Seed propagating kits