Answer: Your bower vines are considered clingers, not climbers, so they'll need something to cling to as they scramble up the brick wall. As they grow more and more stems they will eventually become woody and will support themselves. In the meantime, you'll need to use wire or even nylon fishing line to provide some vertical support. I'd remove the bamboo stakes and string some wire or line, then pinch the tips of the vines back to encourage lateral growth. They will spread, continue to put on height and eventually will cover the brick wall. Best wishes with your vines!
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