Question about Canna's

Excellent point!
Dale has a great point. Now that I think about this, I'm not sure whether I would want to plant cannas in the same container I had annuals in. For one thing, cannas require a lot of water. They also like to receive a bloom boosting fertilizer and Epsom salts. Most annuals aren't as demanding of care as cannas are. So, unless you are planting annuals that require the same amount of care and the same conditions as cannas do in the same pot, I think I'd move the annuals elsewhere.
Susan, the Texas Yankee, the Texas Rangerette and the Assistant Administrator
Susan,The Assistant Administrator, the Texas Yankee and the Texas Rangerette.

Canna
http://www.gardenhere.com/content/Penny2638s-Trade-List

I seriously doubt it. I have
Susan, the Texas Yankee, the Texas Rangerette and the Assistant Administrator
SKBeal's Snazzy Tr Susan,The Assistant Administrator, the Texas Yankee and the Texas Rangerette.

I use the epsom salts
I use the epsom salts around my tomatoes. Know a lady that uses epsom salts on her rose bushes and ferns.
<Dale, Photo Team Leader & Good Will Ambassador

How long they will take to
Susan, the Texas Yankee, the Texas Rangerette and the Assistant Administrator
SKBeal's Snazzy Tr Susan,The Assistant Administrator, the Texas Yankee and the Texas Rangerette.
Cannas from seed..
I start 'growing canna from seed' by soaking the seeds for a couple of days. By then, it's possible, and necessary for quick sprouting, to sand the seed down to the white layer. I usually do this on the end of the seed that has a slight indention. Next they are planted in pots, with the sanded end up, of soil good for seed germination. I just had some to sprout in 10 days using this method. They will later be transplanted into the beds. The ones I planted last year from plants are coming back, but are not growing very fast yet. I'm getting impatient. Maybe soon I will have a jungle of exotic foliage and blooms.
Annette Shelton/ mawnature/ maw
Let's Make a Trade!
Annette/ maw We come from the earth, we return to the earth, and in between, we garden. Author unknown http://www.gardenhere.com/content/MAWNATURES-TRADE-LISTCmon-lets-make-trade
I would be careful about
I would be careful about the epsom salts to annuals. Never heard of anyone putting the "salts" to annuals.
Dale, Photo Team Leader & Good Will Ambassador