Deer-Resistant Perennials: What Actually Works in Suburban Long Island

No perennial is deer-proof. The most reliably ignored plants in high-pressure areas are aromatic herbs, fuzzy foliage, toxic plants, and the alliums. Hostas, daylilies, and tulips are deer candy.

"Deer-resistant" is a marketing term. "Deer-proof" doesn't exist. The honest framing is one I learned from the Rutgers Landscape Plants Rated by Deer Resistance publication, which has been the most-used reference on this question in the mid-Atlantic for over twenty years: plants are rated A through D, where A is rarely damaged and D is frequently severely damaged, and even the As get eaten when deer are hungry enough.

I garden in Melville, on Long Island. Deer pressure here is moderate-to-high — there's an active herd that moves through my neighborhood every winter and early spring, and my front bed has been a long experiment in what they touch and what they don't. This guide is the intersection of what Rutgers and Penn State Extension have documented and what I have actually watched happen in my own yard.

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The Rutgers rating system

The Rutgers New Jersey Agricultural Experiment Station's Landscape Plants Rated by Deer Resistance (publication E271) is the most rigorous deer-resistance reference for the mid-Atlantic. It assigns each plant a letter rating:

• A = Rarely damaged
• B = Seldom severely damaged
• C = Occasionally severely damaged
• D = Frequently severely damaged

I'll use these ratings throughout this guide. They reflect data collected at multiple New Jersey sites with varying deer pressure — your local mileage will vary, but the relative rankings are reliable.