Have to say I have been planting various annuals in my bulb pots in an effort to dry them out before deep dormancy occurs in July. The problem is that that time of year is routinely the wettest. It has worked rather well except that the roots of annuals get under the tunics and destroy them for the most part.
I tried rye - too aggressive and lasted far too long even when dry. Tried sunflowers which I thought would germinate fast, get potbound even faster and die quicker, they were the hardest on the tunics and amazing how long they can persist when bone dry but foggy. With the long cool stretches in June I tried peas which worked a treat, sprouted immediately and died the second they dried out thoroughly but a horrible tangled mess when pulling pots.
I wonder if chrysanth Pyrethrum would discourage NBF?
johnw