# Milkweed in Arkansas

> 14 milkweed species are recorded in Arkansas.

Source: https://milkweedusa.com/states/arkansas/  
Licence: CC BY 4.0 (Milkweed USA)

## Overview

The Ozark and Ouachita highlands give Arkansas dry glade species such as green antelopehorn and purple milkweed, while the Delta’s bottomland forests hold aquatic milkweed. Roadside and utility corridor management drives most monarch habitat in the state.

- Species recorded: 14
- USDA hardiness zones: 6a–8b
- Monarch flyway: eastern
- Best time to sow seed outdoors: November to January

## Species recorded in Arkansas

| Common name | Scientific name | Native | Height | Bloom |
| --- | --- | --- | --- | --- |
| Swamp Milkweed | Asclepias incarnata | Yes | 3 ft–5 ft | June to September |
| Butterfly Weed | Asclepias tuberosa | Yes | 1 ft–3 ft | May to September |
| Purple Milkweed | Asclepias purpurascens | Yes | 2 ft–4 ft | May to July |
| Green Antelopehorn | Asclepias viridis | Yes | 1 ft–2.5 ft | April to July |
| Aquatic Milkweed | Asclepias perennis | Yes | 1 ft–3 ft | May to September |
| Common Milkweed | Asclepias syriaca | Yes | 3 ft–6 ft | June to August |
| Whorled Milkweed | Asclepias verticillata | Yes | 1 ft–2.5 ft | June to September |
| Clasping Milkweed | Asclepias amplexicaulis | Yes | 1.5 ft–3 ft | May to July |
| Fourleaf Milkweed | Asclepias quadrifolia | Yes | 1 ft–2 ft | May to June |
| White Milkweed | Asclepias variegata | Yes | 1.5 ft–3.5 ft | May to July |
| Green Comet Milkweed | Asclepias viridiflora | Yes | 1 ft–3 ft | May to August |
| Slimleaf Milkweed | Asclepias stenophylla | Yes | 1.5 ft–3.3 ft | June to August |
| Tall Green Milkweed | Asclepias hirtella | Yes | 2 ft–4 ft | June to August |
| Longleaf Milkweed | Asclepias longifolia | Yes | 1 ft–2.5 ft | April to July |

## How to cite

Milkweed USA. (2026). Milkweed in Arkansas. https://milkweedusa.com/states/arkansas/