Spring in Tucson: Plants & Weeds That Can Be Dangerous for Dogs

Springtime in Tucson means sunshine, wildflowers, and beautiful desert trails — but it also brings out several plants and weeds that can be harmful to our pups.

At Pura Vida Pet Care, your pet’s safety is always our top priority. Here are the most common springtime plants in Southern Arizona that pet parents should watch out for — plus tips to keep your furry family safe.

🌿 Desert Lupine (Wild Lupine)

Why it’s dangerous:All parts of lupine are toxic and can affect the nervous system.

Symptoms in dogs:

• Drooling

• Vomiting

• Lethargy

• Tremors or weakness

📍 Common along trails, open desert, and roadsides in spring.

🌿 African Rue (Harmal / Peganum harmala)

Why it’s dangerous:This invasive weed is highly toxic and affects the brain and heart.

Symptoms in dogs:

• Seizures

• Tremors

• Vomiting

• Disorientation

• Collapse (severe cases)

📍 Often found in vacant lots, sidewalks, and dry washes.

🌸 Oleander (Nerium oleander)

Why it’s dangerous:One of the most toxic plants in Arizona — even tiny amounts can be life-threatening.

Symptoms in dogs:

• Heart rhythm problems

• Drooling

• Vomiting

• Weakness

• Collapse

📍 Common in yards, parks, medians, and apartment complexes.

⚠️ Extra caution: Even dried leaves are toxic.

🌾 Foxtail Grass (Extremely Dangerous, Not Poisonous)

Why it’s dangerous: Foxtails don’t poison dogs — they embed into skin, ears, nose, and paws and migrate internally.

Can cause:

• Abscesses

• Infections

• Emergency surgery

• Organ damage (if inhaled)

Warning signs:

• Sneezing

• Head shaking

• Limping

• Licking paws

• Swelling

📍 Everywhere in spring: fields, trails, vacant lots, sidewalks.

🌵 Bonus: Yellow Bells (Esperanza/ Tecoma Stans)

Why it’s risky:Mild to moderate toxicity if eaten in larger amounts.

Symptoms:

• Upset stomach

• Drooling

• Vomiting

📍 Very common in Tucson landscaping.

🐾 Pura Vida Safety Tips for Spring Walks

✅ Stay on cleared paths

✅ Avoid letting pups graze/snack outdoors

✅ Rinse paws after hikes

✅ Check ears, toes, and fur after walks

✅ Know where oleander is in your neighborhood

⚠️ If a dog eats a suspicious plant:

➡️ Remove access to the plant, and call your vet or Pet Poison Helpline immediately.

Do not induce vomiting unless instructed