528 native plants no nursery sells

"Plant natives" is the most repeated piece of advice in gardening. It assumes you can buy them. For 30% of the native plants the USDA documents, nobody can — and it is not because anything is unknown about how to grow them.

Published 11 September 2026 · Understory Guide · USDA PLANTS data, catalogue version 2026-09-11

The finding

Our catalogue holds 1,774 plants native to North America, each with traits quoted from the USDA PLANTS database. USDA also publishes a commercial availability rating for every plant. For 528 of those natives — 30% — it reads No Known Source.

The obvious explanation would be that these are poorly understood plants: obscure, undescribed, nobody knows what they need. That is not what the data says. 490 of the 528 have a complete set of core growing traits — mature size, light, water, soil pH, growth rate, hardiness, bloom period, flower colour — and a photograph. We know exactly how to grow them. They are simply not for sale.

What is missing, by the numbers

The gap is not concentrated in oddities. It falls hardest on the families that make up the backbone of North American plant communities:

• Asteraceae (asters, coneflowers, goldenrods) — 76 unavailable
• Poaceae (grasses) — 71
• Cyperaceae (sedges) — 47
• Fabaceae (legumes — the nitrogen fixers) — 31
• Rosaceae — 27

By growth habit: 273 perennials, 130 grasses and sedges, 64 shrubs, 42 trees, 19 vines. Grasses and sedges are the worst hit in proportion — the layer that holds soil together and the layer most native-planting advice tells you to start with.

Why this is our problem to report

Most plant databases answer "what is this plant like". Ours also answers "can you get it", because USDA publishes that and almost nobody surfaces it. Put the two together and a specific failure becomes visible: the bottleneck on native planting is supply, not knowledge. Every one of these 528 plants is documented well enough to grow. The advice to plant natives has run ahead of the trade's ability to supply them.

We cannot tell you why any individual plant is unavailable. USDA's rating is an assessment of the trade, not a survey of nurseries, and we have no data on grower economics. A plant marked unavailable may well be sold by a specialist nursery near you — if you find one of these in a catalogue, that is a genuinely good find.

We built pages for all of them, and then declined to index them

This site gives every plant in the catalogue a page, so that no search result ever dead-ends. But a page is only asked to be indexed when the plant is both well-documented and obtainable — which means none of these 528 plants has an indexable page. Their pages exist and you can read them; we just do not ask Google to rank a page for a plant you cannot act on.

That rule is why we can count this in the first place. Publishing 528 more pages would have been easy. Knowing they were worth less than nothing is the point.

36 that deserve a grower

From the 490 that are fully documented and photographed, here is a cross-section — every one with complete USDA growing data, and no commercial source on record.

Trees

1. 
   Allegheny serviceberry Amelanchier laevisZone 3+ · 35 ft · tree
2. 
   alternateleaf dogwood Cornus alternifoliaZone 2+ · 25 ft · tree
3. 
   bitter cherry Prunus emarginataZone 4+ · 80 ft · tree
4. 
   black maple Acer nigrumZone 2+ · 100 ft · tree

Shrubs

1. 
   Allegheny blackberry Rubus allegheniensisZone 4+ · 6 ft · shrub
2. 
   American tarwort Flourensia cernuaZone 4+ · 3 ft · shrub
3. 
   Bailey's dewberry Rubus baileyanusZone 4+ · 5 ft · shrub
4. 
   bigpod ceanothus Ceanothus megacarpusZone 9+ · 13 ft · shrub
5. 
   black huckleberry Gaylussacia baccataZone 3+ · 4 ft · shrub

Perennials

1. 
   Alberta beardtongue Penstemon albertinusZone 9+ · 2 ft · perennial
2. 
   alkali buttercup Ranunculus cymbalariaZone 3+ · 1 ft · perennial
3. 
   alpine bistort Polygonum viviparumZone 3+ · 1 ft · perennial
4. 
   American bistort Polygonum bistortoidesZone 3+ · 1.5 ft · perennial
5. 
   American pokeweed Phytolacca americanaZone 3+ · 7.3 ft · perennial
6. 
   American spongeplant Limnobium spongiaZone 4+ · 0.5 ft · perennial
7. 
   Anderson's larkspur Delphinium andersoniiZone 5+ · 2 ft · perennial
8. 
   Appalachian blazing star Liatris squarrulosaZone 6+ · 2.5 ft · perennial
9. 
   arctic pearlwort Sagina saginoidesZone 3+ · 0.3 ft · perennial
10. 
    arrowleaf sweet coltsfoot Petasites frigidusZone 3+ · 0.8 ft · perennial
11. 
    basalt milkvetch Astragalus filipesZone 4+ · 2 ft · perennial
12. 
    beaked agrimony Agrimonia rostellataZone 3+ · 2.3 ft · perennial
13. 
    Big Bend bluebonnet Lupinus havardiiZone 4+ · 20 ft · perennial
14. 
    big deervetch Lotus crassifoliusZone 6+ · 3.5 ft · perennial
15. 
    bigflower agoseris Agoseris grandifloraZone 5+ · 1.8 ft · perennial
16. 
    blue cohosh Caulophyllum thalictroidesZone 3+ · 2.5 ft · perennial

Grasses and sedges

1. 
   Alpine Meadow-Foxtail Alopecurus magellanicusZone 3+ · 0.5 ft · grass
2. 
   American cupscale Sacciolepis striataZone 5+ · 3 ft · grass
3. 
   arctic brome Bromus kalmiiZone 3+ · 3 ft · grass
4. 
   Arizona threeawn Aristida arizonicaZone 6+ · 2 ft · grass
5. 
   autumn bluegrass Poa autumnalisZone 6+ · 1.5 ft · grass
6. 
   awl-leaf lilaea Lilaea scilloidesZone 12+ · 0.8 ft · grass
7. 
   beaked spikerush Eleocharis rostellataZone 4+ · 3 ft · grass
8. 
   bearded sprangletop Leptochloa fuscaZone 2+ · 3.3 ft · grass
9. 
   Bigelow's sedge Carex bigelowiiZone 2+ · 0.4 ft · grass
10. 
    bighead rush Juncus megacephalusZone 8+ · 3.1 ft · grass

Vines

1. 
   American vetch Vicia americanaZone 3+ · 1.3 ft · vine

Related

• Dry shade: 179 plants can take it, 87 you can actually buy
• Find native plants you can actually buy
• How we decide what to index

Written and edited by the Understory Guide team. We publish the query behind every number. Corrections: contact us.