So it seems like this question https://biology.stackexchange.com/questions/9618/what-kind-of-land-and-weather-is-required-to-cultivate-apples should be migrated to gardening. I guess the correct procedure in this case is to vote to close, select "off-topic", then "belongs on another SE", and then choose from the options. However, when I get to that point, the only option I'm given is migrating to meta.biology. Any idea why this is happening?
We don't have any migration paths enabled, migration to other SE sites is only possible for moderators. To get a question migrated just flag it for moderator attention.
Migration paths are usually only enabled between non-beta sites, and only if there is a significant number of migrated questions.