here's a riddle of sorts...
1. all the water bottle pots i make for my seedlings are semi-hydro...

it's a recent pic of a germinating seed from a store bought durian. the plastic bottle has drainage holes an inch or two from the bottom.
2. virtually none of the plants i've bought come in semi-hydro pots.
3 i've never made or bought semi-hydro pots for any of my larger plants...

on the left is a myrica californica that i recently approach grafted a starter myrica cerifera onto. on the right is the same thing, but they are in the same pot, unlike the other two, which are in different pots.
none of the pots are semi-hydro.
can you solve the riddle?
i just posted lots of relevant pics and info on my blog. sorry, i had initially planned on transferring all of it over here, but then i kept adding to it. seems like nearly everyone uses the postimg website to share pics here?
if there are any pics in my blog entry you'd like to discuss feel free to hotlink them in this thread.