Why Seed Origin Matters for Native Plants
Two packets of Aromatic Aster seed can contain the exact same species, Symphyotrichum oblongifolium, but have very different origins. One might come from a rocky hillside in Pennsylvania, while the other was collected hundreds of miles away in Missouri.
Both are native plants. Both may grow perfectly well in your garden. But are they really the same?
Not necessarily, and that's where things get interesting.
A native plant is more than its name
Native plants are often discussed in terms of state boundaries. Is it native to Maryland? Pennsylvania? Virginia?
Those are useful questions, but plants don't recognize state lines. Their natural distributions are shaped by geology, climate, elevation, soils, and thousands of years of ecological relationships.
Here in the Ridge and Valley of the Appalachians, those differences can be especially pronounced. Within a relatively short distance, you can encounter dry shale barrens, limestone-rich slopes, moist floodplains, and cool mountain forests. Each supports its own communities of plants and wildlife.
Even populations of the same species can experience very different conditions.
Over generations, some populations develop genetic adaptations to their local environments. These differences can influence growth, flowering, drought tolerance, and other characteristics.
This is where the term ecotype comes in.
What exactly is an ecotype?
An ecotype is a population within a species that has developed genetic adaptations to particular environmental conditions.
Consider a wildflower growing on an exposed, drought-prone hillside compared with the same species growing in a cooler, wetter region. The two populations may look nearly identical, but they have experienced different environmental pressures over generations.
That doesn't mean every population is genetically distinct, or that the closest seed source will always perform best. Local adaptation varies between species and populations.
Still, knowing where seed originated gives us important information that a scientific name alone cannot provide.
There's also a difference between where a plant was grown and where its seed originated. A nursery might grow a native wildflower in Maryland using seed originally collected several states away.
That plant was grown locally, but its genetic origin is not necessarily local.
Why does this matter for wildlife?
Native plants support complex ecological relationships. Some insects depend on particular plant species for pollen, foliage, or reproduction.
Flowering times can also matter. A plant's seasonal development is influenced by its genetics and growing environment, which means moving populations between regions can sometimes affect when they bloom.
For restoration projects, seed origin becomes particularly important. Introducing plants with poorly matched genetics can affect establishment, long-term resilience, and potentially the genetic composition of nearby wild populations.
This doesn't mean a garden planted with distant ecotypes has no ecological value. Far from it! Growing native species still provides food and habitat for wildlife.
It simply means there's another layer worth considering when choosing plants.
Growing for the Ridge and Valley
At Laurel Field Co., we're building our nursery around the native flora of the Appalachian Ridge and Valley.
That means looking beyond whether a species is technically native to a state. We're interested in where it naturally grows, what habitats it belongs to, and where the seed used to produce our plants came from.
We're especially interested in regionally sourced seed, including material from Pennsylvania, Maryland, Virginia, and West Virginia.
But finding seed with well-documented origins isn't always easy. Many commercial seed listings provide a scientific name without identifying the original collection location.
When that information is available, we want to preserve it. When it isn't, we'd rather be transparent than make assumptions.
We also recognize that the nearest source isn't automatically the best source for every situation. Genetic diversity, site conditions, seed availability, and a changing climate all deserve consideration.
The goal isn't to draw an arbitrary line on a map. It's to make thoughtful decisions about the plants we grow and the landscapes they'll eventually become part of.
A little more information goes a long way
The next time you're shopping for native plants, consider asking where the seed originated.
Was it collected from a wild population? Was it grown commercially from a documented regional source? Is the original provenance unknown?
Not every nursery will have those answers, and that's part of a much larger challenge facing native plant production.
But asking those questions encourages better recordkeeping and helps build demand for regionally appropriate plant material.
For us, that's an important part of growing a nursery rooted in the landscapes of the Ridge and Valley.
Because where a plant comes from is part of its story, too.
Further Reading
University of Maryland Extension: Collecting & Sowing Native Plant Seed
[US Forest Service: Seed Planning, Sourcing, and Procurement](https://research.fs.usda.gov/treesearch/61