Maybe (3b)...Which species experiences more variation and has experienced more change in its flowering time? This question would allow you to address differences related to climate, climate change, mutation/evolution, and many other factors. It would give you a basis to review flowering time variation in a broad way. For me, investigating the various drivers of changes in flowering times is much more interesting than reviews of the limited aspects suggested by choices 1 through 3. Your choice 1, for example, almost seems more like an attempt to look at climate change, or some other factor, than something really related to flowering times (at least that's how it hits me). Choice 2 is OK, but it makes me wonder why you chose only those two factors. Choice 3 seems more like a question for the botanical version of Guinness.

Hello! I'm a postdoc at Harvard, studying flowering time changes across time and space. I want to find out what type of research questions would interest people who are into gardening and botany. My question to all of you is: If you get to find out the answer to only one of the following questions, which question would you be most curious about, and why? (1) How has flowering times changed historically across the years? (2) How do the changes in flowering time vary with temperature and latitude? (3) Which species experienced more changes in its flowering time? Thank you so much! I'm really curious about what you think.

Thank you Crenda. I've got pups squeezing up around the old plant which is rather stretched now and looks alot like yours. I say the pups are squeezing up because I kept it in the original pot I bought it in and there's not much room between the rim of the outer decorative pot and the pot inside for pups to spill over. Next spring if I manage to keep it going I will repot them into a better potting mix. I wouldn't have even attempted them if someone on this forum hadn't posted some drop dead gorgeous pictures of them when they were colored up to the maximum. It got down to 35 here last night. Mine is in a rather protected site facing west, and the outer decorative pot provides some degree of insulation, so the plant looked just fine today. Thanks for the temperature info though. I will try and save it now.....I apologize if it seems I've hijacked this thread. Still hoping for more flower photos from Mfyss...............Maryl Here's a picture of mine I bought this spring. Already showy IMO.

These are on YouTube, too. So beautiful! The channel is here: EchinopsisFreak