Philadelphus Minnesota Snowflake
Hi everyone,
I've got some rooted cuttings from a friend's philadelphus which I'm pretty sure is a Minnesota snowflake.
I have the perfect spot for their final position, but I've never had a philadelphus before and don't know how fast I can expect them to grow.
They have literally just taken so won't be taking off until spring. Can anybody give me a rough idea of how much I can expect them to grow in a year?
I'm assuming they won't be flowering in 2017?!
Any help would be very gratefully appreciated.
I'm so excited to be able to add them to my garden!! 
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It's a good sized shrub, up to 6ft plus, but easily maintained there. They'll make a foot or so next year, but in subsequent years, following flowering, the new growth will do 4ft in a season. Flowered growth is pruned out in June time to allow the plant to concentrate on the new growth which will provide flower the following year.
H-C
Excellent, thank you. That's just what I needed to know. ?