With as many experiments going as I have, a planner is necessary. Here is the one I am currently using:
GTD is heavily goal oriented with integrated planning, lists, and calendar.
The lite version is free, but various upgrades are also available to power users like me.
The first entry I made in has to do with when I am to pick up a Madagascar Jasmine plant that a neighbor is kindly growing for me. She has about 25 of them started and they are all about yay high, and looking great. She is going to keep the one that is to be mine while I chase around Arizona for the holidays.
I have not learned which lucky neighbors are getting the others, but presumably it will become apparent when they start blooming all over the place.