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The database

Perennials

Herbaceous perennials that return year after year.

1,429 plants

Perennials in the database

Native Wind Flower (Anemone Canadensis) — The plant can spread quite vigorously through rhizomatous growth; it's a low-maintenance option that offers great

Perennial

Native Wind Flower

Anemone Canadensis

FullUSDA 3–8
New England Aster (Symphyotrichum novae-angliae 'Purple Delight') — Generally growing 3 to 6 feet tall and 2 to 3 feet wide

Perennial

New England Aster

Symphyotrichum novae-angliae 'Purple Delight'

FullUSDA 5–8
New England Aster (Aster Novae-Angliae) — the New England Aster thrives in full sunlight

Perennial

New England Aster

Aster Novae-Angliae

FullUSDA 6–10
New Guinea Impatiens (Impatiens X 'New Guinea') — well-draining soil with a consistent moisture level; consider mass planting New Guinea Impatiens, image 59

Annual

New Guinea Impatiens

Impatiens X 'New Guinea'

HalfUSDA 10–10
New Hampshire Purple Cranesbill (Geranium 'New Hampshire Purple') — Ideal for borders and mass plantings, this cranesbill prefers full sun to part shade and

Ground cover

New Hampshire Purple Cranesbill

Geranium 'New Hampshire Purple'

FullUSDA 3–8
New York Ironweed (Vernonia Noveboracensis) — vertical form draped in vibrant colors during blooming season.<br><br>Thriving in hardiness zones 5 through 9

Perennial

New York Ironweed

Vernonia Noveboracensis

FullUSDA 4–8
New Zealand Flax (Phormium 'Surfer') — Phormium 'Surfer' is a striking, evergreen perennial with robust, sword-shaped leaves that arch elegantly

Perennial

New Zealand Flax

Phormium 'Surfer'

FullUSDA 9–10
New Zealand Flax (Phormium Tenax 'Lancer') — New Zealand Flax 'Lancer' (Phormium tenax) is an evergreen perennial boasting striking

Perennial

New Zealand Flax

Phormium Tenax 'Lancer'

FullUSDA 9–11
New Zealand Flax (Phormium 'Apricot Queen') — features striking sword-shaped leaves with a unique blend of green and creamy yellow margins

Perennial

New Zealand Flax

Phormium 'Apricot Queen'

FullUSDA 8–10
New Zealand Flax (Phormium 'Firebird') — Phormium 'Firebird' is an evergreen perennial boasting striking

Perennial

New Zealand Flax

Phormium 'Firebird'

FullUSDA 8–10
New Zealand Scab Plant (Raoulia Australis) — but they are often subtly tucked among the foliage

Ground cover

New Zealand Scab Plant

Raoulia Australis

FullUSDA 5–9
Nick Shaylor Peony (Paeonia 'Nick Shaylor') — Paeonia 'Nick Shaylor' is an exquisite herbaceous perennial boasting double

Perennial

Nick Shaylor Peony

Paeonia 'Nick Shaylor'

FullUSDA 3–8
Nicky Phlox (Phlox Paniculata 'Nicky') — commonly known as Nicky Phlox

Perennial

Nicky Phlox

Phlox Paniculata 'Nicky'

FullUSDA 4–9
Nippon Daisy (Nipponanthemum Nipponicum) — As a landscape architect assistant

Perennial

Nippon Daisy

Nipponanthemum Nipponicum

FullUSDA 5–9
Northern Exposure Hosta (Hosta 'Northern Exposure') — Hosta 'Northern Exposure' boasts wide, heart-shaped, blue-green leaves with striking cream margins

Perennial

Northern Exposure Hosta

Hosta 'Northern Exposure'

HalfUSDA 3–9
Northern Sea Oats (Chasmanthium Latifolium) — Ideal for erosion control and naturalistic landscapes; offering movement and a captivating silhouette against

Grass

Northern Sea Oats

Chasmanthium Latifolium

HalfUSDA 5–9
North Hills Phlox (Phlox Subulata 'North Hills') — North Hills Phlox (Phlox subulata 'North Hills') is an evergreen perennial that forms a dense

Perennial

North Hills Phlox

Phlox Subulata 'North Hills'

FullUSDA 3–10
Nu&trade;eg Scented Geranium (Pelargonium Fragrans) — Due to its compact size and fragrant nature

Perennial

Nu&trade;eg Scented Geranium

Pelargonium Fragrans

FullUSDA 9–10
Oak Leaf Acanthus (Acanthus Mollis 'Oak Leaf') — The Acanthus mollis 'Oak Leaf' is a perennial known for its striking foliage

Perennial

Oak Leaf Acanthus

Acanthus Mollis 'Oak Leaf'

Deep ShadeUSDA 8–11
Oakleaf Foamflower (Tiarella cordifolia 'Oakleaf') — It blooms in spring, emitting delicate, feathery white flowers atop 8-10 inch stems

Ground cover

Oakleaf Foamflower

Tiarella cordifolia 'Oakleaf'

HalfUSDA 4–9
Obovate Peony (Paeonia Obovata) — bowl-shaped flowers in spring

Perennial

Obovate Peony

Paeonia Obovata

FullUSDA 3–10
Obsidian Alum Root (Heuchera 'Obsidian') — Heuchera 'Obsidian', known as Obsidian Alum Root, is cherished for its stunning, nearly black, glossy foliage

Perennial

Obsidian Alum Root

Heuchera 'Obsidian'

HalfUSDA 4–9
Old Field Goldenrod (Solidago Nemoralis) — with several tiny florets

Perennial

Old Field Goldenrod

Solidago Nemoralis

FullUSDA 3–9
Opal Alum Root Hybrid (Heuchera 'Opal') — commonly known as Opal Alum Root Hybrid

Ground cover

Opal Alum Root Hybrid

Heuchera 'Opal'

HalfUSDA 6–10

Photographs are credited on each plant’s page.