confused about indet cuttings to be rooted
I have done several searches and read through multiple threads here, and I tried googling "anatomy of a tomato plant." I found either things too simple, or too complicated, not much in the middle.
I still don't understand, how do I know what is a "growth tip" or a "sucker branch," suitable for me to try to root a cutting? (And are those the same thing? It seems like they aren't but I'm not sure.)
It seems as though, on indeterminates such as I am trying to root, every branch or stem could be termed a sucker? Is this true? I believe I've seen this said here more than once.
Right now, on my Sungold (from last year, which grew funny last year so I thought I'd start over -- it was growing well, then got fried, so it has some main thick branch/stems, and then skinny little stems(?) which bore fruit, but it never grew much higher and I think it won't, or can't, now), there are some newish, low-ish stems with blossoms. Are these suckers? How do you tell?
And just because these are growing, does that mean they are growth tips? (I did find this picture online: http://www-plb.ucdavis.edu/labs/rost/tomato/Stems/Stems.html It has a lot of information if you click on the Branch and Leaf Patterns link, here: http://www-plb.ucdavis.edu/labs/rost/tomato/Stems/branching.html, but, this confused me too. I am hoping someone can boil it down. If anyone wants to "go there," would you say that a vegetative stem is just a stem with no blossoms yet?)
I'm sorry if this is a dumb question. I think it probably is, but I promise, I looked around and have not reached any clarity. I ask because it seems to me that it has been said here that there are parts of the plant that will not root or grow new plants. I guess I am one of those people who learn best by being told what *not* to do!
Thanks in advance for any help.