They loved my allium this Spring. I bought an origami blue and white columbine ,but it bloomed before the hummers arrived and is developing buds for a second bloom (probably in a few days). I also heard they like azealas, lupines, rhododendron, fire star dianthus, and flowering almond. Any fruit tree like cherries, apples, and pears would attract them too.

They loved my allium this Spring. I bought an origami blue and white columbine ,but it bloomed before the hummers arrived and is developing buds for a second bloom (probably in a few days). I also heard they like azealas, lupines, rhododendron, fire star dianthus, and flowering almond. Any fruit tree like cherries, apples, and pears would attract them too.

My weiglia has JUST started opening blooms. My quince flowers earlier and has lost most blooms by now. I will warn you, I don't know if they all misbehave like mine, but it spreads via root sucker at least 20' from it's location, so keep that in mind if you choose one. Last year the hummers were fighting over it, this year I didn't see any until last weekend so I don't know if they arrived a bit later or I just didn't time my visits to where the quince is around when they were there. The orioles were happy to see it though.

I second the above post about fruit trees, I've seen them on my crab apple.

What about some of the honeysuckle like Major Wheeler or Golden Flame?