Question: are tulip bulbs poisonous to squirrels?
Answer: Squirrels and chipmunks avoid daffodils, which are poisonous in all parts. You can try sticking to just daffs or planting them among more tasty bulbs, like tulips and crocus, in hopes the rodents will avoid the planting entirely. ... (For instance, tulips and hyacinth require a larger gauge than crocus or scilla.)