I think the issue is much broader, as you pointed out, than simply the horticultural area. It's plumbing, electrical, and auto mechanics.
This fits in so well with Ms. Kennedy's comment about prior learning. I have relatives who could take an engine apart and put it back together, without a manual to read, and I couldn't do it with a manual. I think it's important to look at all of the trades to try to find a way to raise the value, if I can use that term, in the minds of our young people.