When we think of bulbs, we think of Amaryllis, daffodils, and tulips. I also think of onions. Besides true bulbs, there are corms, rhizomes, tubers, and tuberous roots. They each are different yet so alike.
There are two (2) basic groups of bulbs. One group is called naturalizers. Bulbs that naturalize are left in the ground, year after year. Over time, the bulbs increase and their blooms increase in size and intensity.
Some bulbs, like tulips, need more cold than others to naturalize. Where the ground freezes, the bulbs bloom on year after year. Where the ground doesn’t freeze, and, if left in the ground, the blooms get smaller and smaller to eventually the tulip is gone.
The second group of bulbs has to be replanted every year in order to get the sought after bloom. Some may not get enough chill, some may rot in the ground due to wet conditions, others are just not hardy enough to survive the winter. If you will dig up the bulb after blooming, store the bulbs in a cool, dry place, and then, replanted at the appropriate time, they will bloom again next season.