A few years back, someone at a native plant sale handed me a printout of plants from the National Wildlife Federation's website and said, "You should look this up." I went home, typed in my zip code, and sat there for a solid twenty minutes just staring at my computer screen.
The list was long. Really long. And I had no idea what half of it meant or what to do with it.
That's what this guide is for. The NWF Native Plant Finder is one of the genuinely good, genuinely free tools available to home gardeners, and I want you to be able to use it confidently — not just stare at it like I did. Let's walk through the whole thing, from your first search to actually putting plants in the ground.
Step One: Go to the Tool and Enter Your Zip Code
Head to nwf.org/NativePlantFinder. The interface is simple: there's a box asking for your zip code. Type it in and hit the button. That's it. You don't need to create an account or sign up for anything.
Within a few seconds, you'll get a list of native plants for your ecoregion. Not just your state — your specific region, which matters a lot. Ohio, for example, crosses multiple ecoregions, and plants native to the Lake Erie shoreline may not be native to the hill country in the southeast part of the state. The zip code lookup gets you a more accurate local list than a statewide one would.
The results come back organized by plant type — trees, shrubs, flowers, grasses and sedges — and each plant entry shows you a number. That number is important and I want to explain it right now before we go any further.
What That Number Actually Means
Next to each plant name, you'll see a number — something like "371" or "42" or "9." This is the caterpillar host plant count: the number of native lepidoptera species (butterflies and moths) that use this specific plant as a host for their caterpillars.
This is the most important piece of information on the page, and most people gloss right over it. Let me explain why it matters so much.
You've probably heard about "pollinator gardens" — plant flowers, get butterflies, everyone's happy. And that's not wrong. But nectar plants are basically fast food for pollinators: quick energy, no real commitment. Host plants are something fundamentally different. A host plant is where a butterfly or moth lays its eggs, where the caterpillar hatches, where it eats and grows and eventually transforms. Without host plants, you don't get butterflies at all. You can't have the adults without the caterpillars, and you can't have the caterpillars without the right host plants.
The ecologist Doug Tallamy — who wrote the book Bringing Nature Home — has done more to popularize this idea than anyone. His research showed that native oaks in the eastern US host over 500 species of caterpillars. Cultivated non-native trees like Bradford pear? Close to zero. That number next to each plant on the NWF finder is telling you how much ecological work that plant does in your local food web. A plant with a high number is pulling enormous weight. A plant with a low number is still valuable, but it's doing less for the system as a whole.
So when you're looking at your plant list, sort by that number and start from the top. Plants like native oaks, cherries, willows, birches, and blueberries — those are your heavy hitters. Prioritize them if you have space, especially trees and large shrubs.
Walking Through the Results Page
Once your results load, here's how to read them:
- The plant name — listed with both the common name and the scientific name. The scientific name is important because it tells you exactly what species you're looking for when you go shopping. "Purple coneflower" could mean several species; Echinacea purpurea means one specific thing.
- The caterpillar host count — as explained above. High numbers = more ecological value.
- Photos and basic info — clicking through to any plant gives you light requirements, moisture needs, bloom time (if applicable), and sometimes notes about wildlife value beyond caterpillars.
- The "find local plants" button — this links to nurseries near you that supposedly carry the plant. The database isn't always perfectly up to date, but it's a good starting point.
You'll also notice some plants flagged as particularly high-value for wildlife. Pay attention to those. The tool has done some of the ranking work for you.
Cross-Referencing With Your Hardiness Zone
The NWF finder is good, but it doesn't tell you everything you need to know about whether a plant will thrive in your specific yard. That's where your USDA Hardiness Zone comes in.
Your hardiness zone is based on the average annual extreme minimum temperature in your area — the coldest it typically gets. Most of Ohio is zones 5b through 6b, which means minimum winter temperatures between -15°F and 0°F. If you don't know your zone, just go to planthardiness.ars.usda.gov and type in your zip code there too.
When you're researching a plant from your NWF list, check that it's hardy to your zone. Most native plants in your ecoregion will be fine, but if you're at the northern edge of a plant's range, you might get marginal results. Conversely, if you're at the southern edge, a plant that loves cold winters might struggle.
Beyond hardiness zone, also consider:
- Sun exposure — Most natives are pretty clear about whether they want full sun, part shade, or full shade. Match this honestly to your actual yard.
- Soil moisture — Native plants often have strong preferences. Prairie plants typically want well-drained soil; woodland natives may want more moisture and organic matter. Trying to grow a prairie plant in a boggy spot is just heartbreak waiting to happen.
- Mature size — A redbud tree is gorgeous and ecologically valuable. It also gets 20 to 30 feet tall. Know what you're planting before it's too late.
I also highly recommend keeping a garden planning journal where you record what you plant, where, and how it performs year over year. This is less fancy than it sounds — I use a cheap composition notebook — but having records of what worked and what didn't in your specific yard is genuinely invaluable as you keep adding plants over time.
The Companion Tool Right Here on This Site
Before we get to buying, I want to mention something: I've built a companion tool right here on Grow With Meemaw that lets you search native plants with a little more filtering flexibility. You can find it at /garden/native-plant-finder/. It uses similar underlying data but lets you filter by bloom color, height, sun and moisture requirements, and more — which is helpful when you're trying to design an actual planting rather than just browse a big list. Use the NWF finder to get your master list, then use the tool here to narrow down for specific spots.
Now What? Where to Actually Buy Native Plants
This is where a lot of people get stuck. You've got your list. You're excited. You go to the nearest big box garden center and... it's mostly hostas and knockout roses and things labeled "pollinator friendly" that are actually cultivated varieties from Japan. Frustrating.
Here's my honest take on where to buy, ranked from best to more convenient:
Local native plant nurseries and specialty growers: These are your best option by a mile. Staff who actually know what they're selling, plants grown from local ecotypes (which means the plants are genetically adapted to your specific region, not just the right species), and usually good availability of the plants on your NWF list. To find them, search "[your state] native plant society" — most state native plant societies maintain nursery directories. Also check the Lady Bird Johnson Wildflower Center's nursery finder at wildflower.org/suppliers.
Native plant sales and swaps: Many native plant societies, nature centers, and conservation districts hold annual sales in spring and fall. These are often the best deals you'll find, sometimes run by volunteers who grow their own plants from seed collected locally. I've gotten some of my favorite plants at these sales for a dollar or two a pot. Check your county's conservation district website and local nature center calendars.
Mail-order native plant nurseries: Perfectly good option, especially for rarer species or if you don't have a local native nursery. Prairie Moon Nursery (out of Minnesota), Izel Native Plants, and Ernst Conservation Seeds are all reputable. Shipping can add up, but you get access to a much wider selection than any local store. Order in late winter for spring delivery and your plants will arrive dormant and ready to get established before summer heat.
Big box stores: I'm going to be honest here. Most of the plants at Home Depot and Lowe's that are labeled as natives are either cultivars (bred for showiness at the expense of ecological function), mislabeled entirely, or grown with neonicotinoid pesticides that linger in plant tissue for years and harm the very insects you're trying to help. That said, both stores have improved their native plant offerings in recent years in some regions. If you buy there, look specifically for the "National Wildlife Federation Certified" tag, buy the plainest-looking version of any species (less likely to be a heavily altered cultivar), and avoid anything with "Neo-nicotinoid free" conspicuously absent from the label. It's not an ideal source, but it beats not planting anything at all.
Field Guides That Will Actually Help You
Once you start going native, you'll want a good reference on your shelf. A quality native plants field guide for your region is worth every penny. For the eastern US, I love Wildflowers of the Eastern United States by Eastman and Hansen, and for a broader ecological perspective, Tallamy's Bringing Nature Home will genuinely change how you think about your yard. A good regional guide will tell you not just what something looks like but where it grows naturally, which tells you a lot about how to grow it in your garden.
If you want to grow from seed — which is the most economical way to add lots of plants and lets you source from reputable wild-collected seed collections — look for native seed collections from reputable regional sources. Prairie Moon sells them; Ernst Conservation Seeds sells them in bulk. Starting from seed is slower but deeply satisfying and much cheaper than buying potted plants at scale.
Making Your Planting Plan From the List
Once you have your zip-code list and you've cross-referenced zones and site conditions, here's how I suggest organizing your approach:
- Start with structure: Trees and large shrubs first. They take the longest to establish and provide the most ecological value. If you can plant one native oak, one native cherry, and one native serviceberry, you've done more for local wildlife than a hundred pots of coneflower.
- Add mid-layer shrubs: Native viburnums, buttonbush, elderberry, native hazelnuts, spicebush, blueberries — all are excellent. Most are also beautiful and productive.
- Fill in with perennials: Now's when your milkweeds, coneflowers, black-eyed Susans, native asters, goldenrods, and wild bergamot come in. These provide the nectar and seasonal bloom that attract adult pollinators, and many also host caterpillars.
- Add grasses and sedges: Don't skip these. Little bluestem, sideoats grama, Pennsylvania sedge — native grasses are incredible habitat for ground-nesting bees and overwintering insects. They also look stunning in fall and winter.
You don't have to do all of this at once. I didn't. I started with a few plants a year and kept adding. Fifteen years in, my yard looks nothing like it did, hosts an embarrassing number of fireflies in June, and keeps me happier than almost anything else in my life. It starts with a zip code and a list.
Go use the tool. Write down your favorites. Then go find them.
Happy planting, y'all. 🌿
— Meemaw