Ashley,
Welcome to the world of cannas. DonÂt be fooled by the term "mini". Dwarf cultivars typically produce a plant roughly 3 ft. in height with the bloom extending above the foliage. Since you indicate you will be growing on your patio, I suggest you grow each small plant in a container at least 15 to 18 inches (diameter). You could place your plants first in a smaller pot that is only 6 to 8 inches but within 4 to 6 weeks they would need to be transplanted into the larger container. You can cut off the misshapen and slimy growth.
Cannas produce a prodigious amount of roots and they quickly become root bound in smaller containers. In warm (hot) weather they will need plenty of water as well as nutrients. You will find it advisable to have a shallow drain pan under each pot to hold additional water. Most large containers can be purchased with fitted bottom pan. Good luck and enjoy.

Kent

Ashley how are the cannas doing ??? I hope that they have sprouted new leaves and are doing better.

Hi Roly!

They are doing great! Thanks for asking! I'll post a few pictures next week!

The leaves are mostly maroon with some green strips, they are still small but I'd say the leaves are about 10" or taller. Some are doing better than others, all are growing but some have grown more, and a couple are growing at an angle. Not sure if I should try to straighten them up or let them grow. I kinda just wanna let them grow since they had a rough start ;)

Ashley

Roly, here are a couple of photos of my cannas. They have been outside ever since I planted them.

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Any advice about pot size? Should I replant them or do they look like they'll stay on the smaller size? They are suppose to be "small cannas" haha

Ashley