You really need Howard's "Texas Gardening the Natural Way". Then you don't NEED to write anything down!
Yes, it's time for snapdragons, dianthus & pansies but I'm waiting a few more days b/c I don't yet believe this cool weather. As far as bulbs, there's a chart in the afore mentioned book that tells you the planting depths. I don't know as it matters which bulbs you can plant under which flowers.
Hope this helps.
Patty
PS don't be thinkin' tulips will come up year after year here!
I think there is a variety that will for a few years...wish I could remember what that was...