# musk thistle (*Carduus nutans*) Musk thistle is a tall plant with spiky purple flowers that bloom in summer. It can grow in many places and is often found in fields and along roadsides. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 2/5 · Low - **Snaps:** 69 - **Habitat:** Grasslands - **Also known as:** Nodding Thistle ![musk thistle](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Carduus_nutans_kz01.jpg&width=800) Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Carduus_nutans_kz01.jpg) ## Appearance The musk thistle has large, solitary, deep reddish-purple flower heads that distinctly nod or droop. Its broad, deeply lobed leaves are spiny along the edges and feature a prominent whitish midrib, setting it apart from smooth-leafed plants. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Magnoliopsida - **Order:** Asterales - **Family:** Asteraceae - **Genus:** Carduus ## Interesting facts - Each plant can produce up to 20,000 seeds, helping it spread very quickly! - Its drooping flower heads inspired its common name, 'Nodding Thistle'. - This tough plant is considered an invasive species in many countries around the world. - Tiny insects called weevils are sometimes released to help manage huge groups of musk thistle! ## Special abilities - **Nodding Defense:** Musk thistle can nod its heavy flower heads, which might help protect its developing seeds from strong winds and harsh rain. - **Spiny Shield:** Musk thistle has sharp spines on its leaves and stems that help defend it from hungry animals trying to eat its plant parts. - **Wind Sailor Seeds:** Musk thistle has fluffy parachute-like structures attached to its seeds, helping them catch the wind and travel far. ## Measurements & details - **Height:** 50-200 cm - **Spread:** 30-100 cm - **Flower Size:** 3-7 cm - **Bloom Season:** Late spring to late summer - **Edible:** No - **Toxicity:** Mild - **Lifecycle:** Biennial - **Pollination Method:** Insect ## Ecological connections - **Pollinates:** Honey bee (*Apis mellifera*) — Gathers nectar and pollen from the flowers. - **Pollinates:** [Common eastern bumble bee](https://www.snappit.app/explore/common-eastern-bumble-bee) (*Bombus impatiens*) — Visits the large flowers for nectar and pollen. - **Eats:** Thistle head weevil (*Rhinocyllus conicus*) — Larvae feed inside the flower heads, consuming seeds. - **Eats:** Rosette weevil (*Trichosirocalus horridus*) — Feeds on the root crown and leaves of the young plants. ## Traits - [Flowering](https://www.snappit.app/explore/traits/flowering): Flowering plants are any plants that produce flowers as part of their reproductive cycle. - [Biennial](https://www.snappit.app/explore/traits/biennial): Biennial plants complete their life cycle over two growing seasons, typically forming foliage in the first year and flowering/seeding in the second. - [Summer Blooming](https://www.snappit.app/explore/traits/summer-blooming): Summer blooming plants produce their flowers during the summer season, often providing vibrant color when many other plants have finished. - [Edible](https://www.snappit.app/explore/traits/edible): Edible plants are those parts of a plant that are considered safe for human consumption. - [Grassland](https://www.snappit.app/explore/traits/grassland): Grassland habitats are terrestrial biomes dominated by grasses and herbaceous plants, supporting a variety of grazing animals. - [Pollinator Magnet](https://www.snappit.app/explore/traits/pollinator-magnet): Describes plants that are particularly attractive and beneficial to a wide range of pollinating organisms. - [Spiky/Thorny](https://www.snappit.app/explore/traits/spiky-thorny): Possessing sharp, pointed projections or spines on the body or surface. - [Invasive](https://www.snappit.app/explore/traits/invasive): Invasive species are non-native organisms that cause harm to the environment, economy, or human health. ## Collections - [Plants](https://www.snappit.app/explore/collections/plants) ## Safety **Danger:** 2/5 · Low Be careful around the spiky leaves and flowers; they can poke you! ## Frequently Asked Questions ### How to identify musk thistle? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### How tall is musk thistle? 50-200 cm ### How wide does musk thistle spread? 30-100 cm ### How big are the flowers on musk thistle? 3-7 cm ### When does musk thistle bloom? Late spring to late summer ### Is musk thistle edible? No ### Is musk thistle toxic? Mild ### What is musk thistle's lifecycle? Biennial ## Where to spot - [Arrowmont School of Arts and Crafts](https://www.snappit.app/guides/places/arrowmont-school-of-arts-and-crafts) — Tennessee, US · Campus - [Central Shelby Historic District](https://www.snappit.app/guides/places/central-shelby-historic-district) — North Carolina, US · Historic District - [Chatham Arch](https://www.snappit.app/guides/places/chatham-arch) — Indiana, US · Neighborhood - [Circleville Historic District](https://www.snappit.app/guides/places/circleville-historic-district) — Ohio, US · Historic District - [Delaware Division of the Pennsylvania Canal](https://www.snappit.app/guides/places/delaware-division-of-the-pennsylvania-canal) — Pennsylvania, US · Historic Site - [Dinosaur Ridge](https://www.snappit.app/guides/places/dinosaur-ridge) — Colorado, US · Natural Landmark [View all places to see musk thistle](https://www.snappit.app/guides/where-to-see/musk-thistle) ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Musk Thistle: Facts & Places to See — Snappit](https://www.snappit.app/explore/musk-thistle)