Yes, Lace Fern is toxic to dogs!
Dogs accidentally consuming the Lace Fern plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Lace Fern consumption is also toxic to Cats and Horses.
Toxic Principles Of Lace Fern: .
More Info About The Lace Fern Plant
Scientific Name: Asparagus densiflorus cv sprengeri
Family: Liliaceae.
Also known as: Asparagus, Emerald Feather, Emerald Fern, Sprengeri Fern, Plumosa Fern, Asparagus Fern, Racemose Asparagus, Shatavari.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.