Winter means more indoor plants , but many are toxic to dogs. Avoid lilies, azaleas, oleander, sago palms, and poinsettias. Symptoms of poisoning include vomiting, diarrhea, lethargy, or difficulty breathing. Keep plants Nothing makes you realize how big a ponytail palm can get until it's time to repot one. Fresh soil, a bigger pot, and a whole lot of lifting later this giant is Not all greenery is as harmless as it looks! From common houseplants to spring garden favorites, many can cause anything from mild stomach upset to more serious reactions in dogs. And if The world's biggest spider lair news.com.au Australia's leading news site for latest headlines Amazon.com : Philodendron Fertilizer Liquid Plant Food for Bigger Leaves, Lush Foliage & Steady New Growth, 8 oz : Patio, Lawn & Garden