Gardening can be embedded into so many things. Geography, where does the food on my plate originate, environment, how many miles did this travel and how big is it's carbon footprint, Biology, mono and di-cotyledon leaves (seed leaves, as opposed to true leaves), photosynthesis etc, History, and why we had to 'dig for victory'.
I would love to teach this, currently it's only on offer at the 'pupil referral unit' in our LEA, so it's reserved for naughty and challenging boys and girls, along with motor vehicle engineering and home economics and child development (some of the girls who attend already have babies). Unfortunately I don't have a degree, despite having worked in IT for many years, so can't re-train as a teacher, as you now need a first or higher second honours degree to even be considered as an applicant for a PGCE. This despite the fact that I quality checked all of my husband's work and suggested improvements when he did his PGCE - mind you, he wouldn't get on the course now, as his degree isn't an honours degree. Oh, yes, and the Government have removed the bursaries that were available if you were intelligent enough to string a sentence together and wished to re-train to be a teacher as a mature student. There will be a massive shortage of teachers once the Economy picks up, as a lot of them are biding their time in a job which is relatively secure (although my Husband has recieved notice of potential redundancy for the second time within a year), until the economy picks up and then they will be off - most of my Husband's colleagues in Engineering are already looking, one took redundancy last year and is now working in Dubai, for silly money per year. Go figure that one out.