Answer: I think you've diagnosed the problem - soggy soil causes bulbs to rot. Since you're planting in containers, are you using potting soil or garden soil? Potting soil will drain fastest, which will help keep the bulbs healthier. If you could place the pots somewhere in the garden that is protected from rainfall it would save you from having to cart them to the garage each time it rains. Under a garden bench, perhaps, or next to the foundation of your home where the eaves will divert the rain, or on a picnic table under an umbrella? I'll bet you'll come up with a better solution than having to move them each time it rains!
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