Grindelia integrifolia DC.

Common Name: Puget Sound Gumweed
Family: Asteraceae Giseke

Country of Origin: Oregon, Washington and British Columbia
Habitat: Meadows, ditches, marshlands

Description: Grindelia integrifolia is a perennial herb up to 100 cm (40 inches) tall. It has narrow, lanceolate leaves up to 8 cm (3.2 inches) long and yellow flower heads arranged like a corymb.²
Host plant for Orobanche californica {Orobanchaceae}

USDA Zone: 5-8

Accession Data:

Accession # 199900606
Source: Alison Colwell - USGS Seattle
Provenance: collected 11/99 by Alison Colwell; Richmond Beach, King Cty, WA.
Accession Date: 11-16-1999
Bench: 2102 - MED:Mediterranean B
- Currently: active - healthy
- Qty: 2 confirmed on 01-08-2025

Classification:

Division: Magnoliophyta
Class: Magnoliopsida
SubClass: euasterid II
Order: Asterales
SubOrder:
Family: Asteraceae
SubFamily: Asteroideae
Tribe: Astereae
SubTribe: Machaerantherinae

Flowering Data:

This accession has been observed in bloom on:

Year	Jan				Feb				Mar					Apr				May				Jun					Jul				Aug				Sep					Oct				Nov				Dec
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007

References (internal):

EEB Greenhouse Holdings native to: British Columbia / Oregon / Washington

References (external):

The Plant List (2013). Version 1.1. Accessed 1 September 2015.
Grindelia integrifolia at Wikipedia. Accessed 1 September 2015.
Grindelia integrifolia in Flora of North America, Vol. 20 Page 427, 431, 433. Accessed 1 September 2015.

data regenerated on Wed, 19 Feb 2025 14:54:14 -0500 [bcm v4.0]