Threadleaf Coreopsis Pollen Color, Bloom Season and Bee Forage

Visual guideThreadleaf Coreopsis pollen

Photo: Chrumps · CC BY-SA 3.0

Plant Facts

SeasonSummer to Fall

USDA Zone3 - 9

Plant TypeWildflower

ForagePollen and nectar

Pollen ValueMedium

Nectar ValueMedium

Color FamilyOrange and amber

Scientific NameCoreopsis verticillata

Common NamesThreadleaf coreopsis, Whorled tickseed

Native RegionsEastern United States

Range StatusNative to the eastern United States.

Color ConfidenceModerate

Color MethodA species-level pollen-library record describes the pollen as yellow; the digital swatch is approximate.

Reviewed2026-10-11

Quick Answer

Threadleaf Coreopsis pollen is shown in this guide as an orange and amber tone. It is listed as wildflower, associated with summer to fall bloom timing, USDA zone 3 - 9, and pollen and nectar forage value.

Pollen Color Notes

The visual color shown for Threadleaf Coreopsis is grouped broadly with orange and amber pollen tones. It is intended for comparison and identification support, not as a laboratory measurement.

Pollen color is highly variable. Lighting, pollen age, moisture, collection method, cultivar, and local growing conditions can all change how pollen appears. Use this as general visual guidance, not a scientific color standard or guaranteed field match.

Bloom, Zone, and Forage Context

Threadleaf Coreopsis is listed for summer to fall. The record lists USDA zone 3 - 9; hardiness zones are planning context, not a precise flowering calendar. Approximate bloom months in the supplemental notes: June, July, August, September.

Its forage type is pollen and nectar, with pollen value marked as medium and nectar value marked as medium. The long bloom period can provide recurring pollen and nectar, although cultivar form and planting density affect availability.