I'm new to cannas. How much growth should I be seeing in a week, generally speaking. I planted these, for instance on April 19. It seems to me that they should be bigger than this. These are President. I planted another group a few days later and they have similar growth.
I think they spend a lot of energy initially forming roots. Once they get going, they take off. Mine are also very slow to begin with. I have some I planted several weeks ago and they have barely broken the surface.
No need to worry Mrs. Ed. I live in Madison, WI and mine are just starting to come up. About 1 inch! They'll really shoot off in a few weeks! PATIENCE is the key to growing cannas in the upper midwest.
Cannas like warm soil and warm air temps to really get going. Even here mine are only 2 or 3 feet tall. We've had a cool spring and a VERY rainy one here in N. Texas. Once the sun stays out and air temperatures are consistently warm, they'll take off.
To concur with Steve, they need warmth. I know here in Denver(5b), out nights are still in the 40's and low 50's. Not canna weather. Warming in June to 90's and upper 50's -60's at night, they will launch!
I planted about 7 that I got at a swap the first part of May and I hadn't seen any growth so I just figured they weren't viable. But we have been having tons of rain and yesterday my DH noticed one was up about 3 inches, so maybe there is still hope for all of them. I think maybe lots of water is one of the keys to growing them?
Oh, yes, they love water.. some will grow in ponds! First of may, that sounds about right to start seeing some growth now. I also planted some on May 8th and many are just showing tips now or maybe an inch or 2 high. Our temps have been in the mid to high 80's a lot with some 90's and nights in the 60's and 70's. So, have faith and patience and you will be rewarded. I have learned to plant 'something' every week... no matter what it is.. just to keep me watching for something else to grow then when I remember to go back to something else... there it is! It is fun.