Nasturtium
Tropaeolum majus
The classic garden nasturtium — a fast, easy annual grown for showy, long-spurred, funnel-shaped flowers in red, orange, yellow, and cream above round, shield-shaped (peltate) leaves with radiating veins. Dwarf-bushy types sprawl through beds and containers while climbing types scramble up a trellis. Every part except the roots — leaves, buds, flowers, pods, and seeds — is edible with a peppery, watercress-like bite, and the flowers draw hummingbirds and butterflies.
Climate fit: moderate (68/100)
Edible
Pollinator
Container
Light
Full sun
Water
Moderate water
Mature size
12-120" tall · 12" apart
Lifecycle
True annual (one season)
AHS heat range
1-9
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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The long-spurred, funnel-shaped flowers hold nectar at the tip of the spur and attract hummingbirds and butterflies as well as long-tongued bees (Missouri Botanical Garden PlantFinder lists the flowers as attracting hummingbirds and butterflies).
Cold hardiness
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Where this plant fits
Suitable across 45 ecoregions — 45 climate-resilient through 2070. Best matches first.
Appalachian mixed mesophytic forests
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Appalachian-Blue Ridge forests
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Arizona Mountains forests
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Atlantic coastal pine barrens
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Blue Mountains forests
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California coastal sage and chaparral
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Canadian Aspen forests and parklands
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Central Pacific Northwest coastal forests
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Central Tallgrass prairie
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Central-Southern Cascades Forests
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Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Coriandrum sativum
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A warm-weather annual of the carrot family grown in herb gardens for two distinct crops from one plant: the lacy, strong-scented foliage harvested young as cilantro, and the aromatic dried seed harvested as coriander. The plant bolts and flowers quickly in hot weather, throwing up showy white-to-pale-lavender umbels and a marked leaf dimorphism — broad scalloped lower leaves give way to fine, thread-like upper foliage on the flowering stems. Fast and easy from a direct sowing, it is best succession-planted for a steady leaf harvest before heat triggers bolting.
Helianthus annuus
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A fast annual for sunny edible, pollinator, and children-friendly beds with bold summer flowers and seedheads.
Lathyrus odoratus
Sweet pea
A cool-weather annual climber grown for intensely fragrant flowers — the species epithet odoratus means "fragrant" — carried on winged stems whose tendrils let plants twine to 6-8 feet in a single season. Cultivars bloom in every color except yellow, May through July. A challenge in hot, humid summers: as temperatures rise the plants decline rapidly, so it is sown early for a cool-season show. The pea-like fruits, unlike edible garden peas, are inedible and poisonous to humans.
Calendula officinalis
Calendula (pot marigold)
An Old World cottage-garden annual grown for daisy- to chrysanthemum-like flowerheads (3-4 inches across) in bright yellow through deep orange, often with a contrasting darker center disk. In cool climates it blooms over a long summer-to-fall window; in hot summers it tends to languish and may need a midseason cutback to rebloom. The somewhat bitter flowers and lance-shaped aromatic leaves are edible, and the petals lend color to soups, rice, and baked goods.
Anthriscus cerefolium
Chervil
A fast, fine-textured cool-season culinary annual in the carrot family (Apiaceae), native to the Middle East, Russia, and the Caucasus and now grown worldwide. NC State Extension describes an erect, spreading plant about 1-2 feet tall with light green, feathery, finely divided (tripinnate) leaves — like a more delicate parsley — and a mild aniseed scent. Small white five-petaled flowers open in saucer-shaped umbels 1-2 inches across in spring and summer. It is generally grown as an annual (occasionally biennial in milder areas), prefers cool weather in moist, well-drained soil, and is a classic component of French fines herbes, prized for a delicate flavor best used fresh.
Thymus vulgaris
Common thyme
A low woody herb for sunny edges, between pavers, and herb-garden borders with pollinator-friendly summer flowers.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Nasturtium (Tropaeolum majus). Retrieved 2026, June 24, from https://plotwright.com/plants/tropaeolum-majus
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
Missouri Botanical Garden PlantFinder
Botanical research database
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
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