Do this in the fall: Plant bulbs in Pots. Store the potted bulbs in an unheated garage or storage room. You'll need to water every few weeks since the pots won't have access to rainfall. In addition to small pots, pack bulbs "shoulder-to-shoulder" in big containers for an abundant display in spring. Toss aside the spacing recommendations so you can get as many bulbs into the container that will fit.
The idea of an arbor covering the narrow side yard between the house and the fence is so appealing... Especially if the house next door is two-story. It allows the house so much privacy and creates the opportunity for a "secret garden" viewable from indoors... Water feature, flowers, bird feeders whatever you desire... Would be nice between house and detached garage too. So beautiful