I guess in zone 4 you would have to treat them like an annual, so good prices are a must.
I got mine from Mammajacks for 7.25.
I also got a 'Asian Moon' from Santa Rosa, it has light purple flowers. for 8.99
http://www.santarosagardens.co...
Also from Mamajacks 'Peach Cobbler' same price. Also Tutti Frutti, these are Dwarf Buddleia.
http://www.americanmeadows.com...
http://www.ballhort.com/Nurser...
How do you like the Tutti Frutti, these can go into a container, also Blue Chip. If you get the dwarfs you can bring them into the house or garage for the winter. I think they would last longer that way and you could get extra years of enjoyment from them, maybe they will smell like jam.
