// SPECIES PROFILE · PERENNIAL · NATIVE

Rydberg's sunflower

Helianthus nuttallii ssp. rydbergii

Rydberg's sunflower (Helianthus nuttallii ssp. rydbergii) is a perennial in the — family. Native to 15 U.S. states (Lady Bird Johnson Wildflower Center distribution data). Hardy in zones 2a–7a. Mature size 58"–12'. Blooms Aug–Nov.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 15 U.S. states, including AZ, CA, CO, ID, MN, MT…
USDA hardiness: Zones 2a–7a
Mature size: 58"–12'
Sun: —
Water: —
Bloom: Aug–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Rydberg's sunflower (Helianthus nuttallii ssp. rydbergii) — *Helianthus nuttallii ssp. rydbergii* — Rydberg's sunflower. Photo via iNaturalist — (c) Steve Matson, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, rydberg's sunflower pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Sneezeweed (Helenium autumnale), Wild Strawberry (Fragaria virginiana).