roundleaf goldenrod
Solidago patula · Asteraceae
roundleaf goldenrod (Solidago patula) is a perennial herbaceous plant in the Asteraceae family. It is native to North America. USDA records it as hardy in zone 2 and warmer, down to about -43°F.
At a glance
| Type | forb-herb USDA |
|---|---|
| Lifecycle | perennial USDA |
| Native status | native USDA |
| Mature height | 6.6 ft USDA |
| Light | part-shade USDA |
| Water need | high USDA |
| Growth rate | moderate USDA |
| Soil pH | 4.5–7 USDA |
| Bloom | September–November USDA |
| Flower color | Yellow USDA |
| Hardiness zones | 2 and warmer USDA |
| Guild layer | understory Derived |
| Nursery availability | Routinely Available USDA |
USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.
Growing conditions
It grows in partial shade. USDA rates it as having needs consistently moist ground. Its drought tolerance is rated low. It tolerates saturated, poorly drained ground well (USDA rates its anaerobic tolerance high). It is recorded on soils from pH 4.5 to 7 — a broad range that spans acidic through mildly alkaline ground. Its cold limit is zone 2.
Size and growth
At maturity it reaches about 6.6 ft, making it a plant that will finish above head height. It grows at a moderate rate.
Bloom period
USDA records a bloom period of September through November. Flowers are yellow.
A flowering date, not a pollinator rating.
Foliage, flower and season
Summer foliage is green, medium in texture. Its flowers are conspicuous. It carries conspicuous autumn colour. Its active growth period is summer. USDA rates its lifespan as short, so plan on replacing or resowing it rather than treating it as permanent structure.
What the site needs to provide
USDA records it across sites receiving 20 to 60 inches of annual precipitation. It needs at least 100 frost-free days to finish its season. It roots to at least 6 inches. Fertility requirement: low — no feeding needed on ordinary garden soil.
Propagating it
Propagate it from seed and bare root. USDA records no cold-stratification requirement, so seed should germinate without a chilling period. Its seed spreads at a slow rate. It spreads vegetatively at a rapid rate.
Resilience and wildlife
Browsing animals find it moderately palatable, so expect deer and rabbits to take an interest. Its fire tolerance is rated none. Its growth form is recorded as rhizomatous.
Role in a guild
Understory. In a layered planting this is the layer beneath the canopy, tall enough to hold structure but shaded from above. The layer is derived by a fixed rule from growth habit and mature height.
Tags
Related plants
Others in Solidago
- Canada goldenrod Solidago altissima
- wreath goldenrod Solidago caesia
- Canada goldenrod Solidago canadensis
- pine barren goldenrod Solidago fistulosa
Similar role and hardiness
- Rocky Mountain maple Acer glabrum
- netleaf hackberry Celtis laevigata
- Arnold hawthorn Crataegus ×anomala
- Jerusalem artichoke Helianthus tuberosus
- Japanese flowering crab apple Malus floribunda
Where this data comes from
Every value on this page comes from the USDA PLANTS database record for symbol SOPA2, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.
- Quoted from USDA PLANTS: active growth period, Bloom, Bloom end, browse palatability, cold stratification, Drought tolerance, fall conspicuous, fertility requirement, fire tolerance, Flower color, flower conspicuous, foliage color, foliage porosity winter, foliage texture, frost free days min, fruit conspicuous, growth form, Growth rate, Hardiness zones, Lifecycle, lifespan, Light, Mature height, Minimum temperature, Native status, Nitrogen fixation, Nursery availability, precipitation max in, precipitation min in, propagation, resprout ability, root depth in, seed spread rate, Soil pH, Soil pH (upper), Tolerance of wet soil, Toxicity, Type, vegetative spread rate, Water need.
- Derived by a fixed rule from those columns: Guild layer.
Read our full data sources and methodology.
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