In the case of dogs eating garden plants and bulbs, the risks range from vomiting and diarrhea to seizures, and death. Here are the plants and bulbs to avoid:
Crocuses
Spring crocuses are attractive to many dogs. Ingestion can cause vomiting and diarrhea leading to dehydration.
Daffodils
All parts (flower, plant, and especially the bulb) contain poisonous alkaloids with potential to cause excessive salivation, vomiting, diarrhea, convulsions, and heart problems. Read more Spring Plants That Are Dangerous, Toxic to Dogs