# Giant Hogweed (*Heracleum mantegazzianum*)

Giant Hogweed is a tall plant that can grow as high as a house! It has big, green leaves and produces white flowers that look like umbrellas. It's important to be careful around it because it can cause skin irritation.

- **Category:** [Plants](https://www.snappit.app/explore/categories/plant)
- **Rarity:** Common
- **Danger:** 4/5 · High
- **Habitat:** Wetlands

![Giant Hogweed](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/0_Heracleum_mantegazzianum%252C_native%252C_Zelenchuksky_District%252C_Karachay-Cherkessia%252C_Caucasus_Mts%252C_Russia_1.jpg&width=800)

Photo: anastasiiamerkulova, CC BY 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:0_Heracleum_mantegazzianum%252C_native%252C_Zelenchuksky_District%252C_Karachay-Cherkessia%252C_Caucasus_Mts%252C_Russia_1.jpg)

## Appearance

The Giant Hogweed is a towering plant, often over 3 meters tall, with thick, hollow stems mottled with purple blotches and covered in bristly white hairs. Its enormous, deeply lobed leaves can be over a meter wide, and it boasts colossal umbrella-shaped clusters of tiny white flowers.

## Taxonomy

- **Kingdom:** Plantae
- **Phylum:** Tracheophyta
- **Class:** Magnoliopsida
- **Order:** Apiales
- **Family:** Apiaceae
- **Genus:** Heracleum

## Interesting facts

- A single plant can unleash up to 50,000 seeds to conquer new areas!
- It can regrow from its root even after being cut down, making it tough to remove!
- Its enormous leaves can grow over a meter wide, blocking sunlight from other plants!
- The sap makes your skin super sensitive to sun, causing nasty burns!

## Special abilities

- **Growth King:** Giant Hogweed can grow incredibly fast, reaching impressive heights quickly, which helps it outcompete surrounding native plants for light and space.
- **Seed Shower:** Giant Hogweed can produce tens of thousands of seeds per plant, enabling it to spread widely and establish new populations rapidly.

## Measurements & details

- **Height:** 200-500 cm
- **Spread:** 100-250 cm
- **Flower Size:** 20-50 cm
- **Bloom Season:** Summer
- **Edible:** No
- **Toxicity:** High
- **Lifecycle:** Biennial
- **Pollination Method:** Insect

## Ecological connections

- **Pollinates:** European honey bee (*Apis mellifera*) — Attracted to its large, nectar-rich flower heads.
- **Pollinates:** Common Eastern bumblebee (*Bombus impatiens*) — Visits the plant's wide umbels for pollen and nectar.
- **Pollinates:** Common bluebottle fly (*Calliphora vicina*) — One of many generalist insects that pollinate the flowers.

## 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.
- [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.
- [Wetland](https://www.snappit.app/explore/traits/wetland): This habitat trait identifies species found in wetlands, which are areas of land saturated with water, either permanently or seasonally, including marshes, swamps, and bogs.
- [Giant](https://www.snappit.app/explore/traits/giant): Giant describes organisms or objects of significantly larger size than average for their species or type.
- [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:** 4/5 · High

Do not touch Giant Hogweed without adult supervision, as its sap can hurt your skin.

## Frequently Asked Questions

### How to identify Giant Hogweed?

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 Giant Hogweed?

200-500 cm

### How wide does Giant Hogweed spread?

100-250 cm

### How big are the flowers on Giant Hogweed?

20-50 cm

### When does Giant Hogweed bloom?

Summer

### Is Giant Hogweed edible?

No

### Is Giant Hogweed toxic?

High

### What is Giant Hogweed's lifecycle?

Biennial

## 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*)

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Source: [Giant Hogweed: Facts & Places to See — Snappit](https://www.snappit.app/explore/giant-hogweed)