![Witches' broom, a parasite on a White spruce tree (Picea glauca) in the taiga, Denali NP, Alaska, USA Stock Photo - Alamy Witches' broom, a parasite on a White spruce tree (Picea glauca) in the taiga, Denali NP, Alaska, USA Stock Photo - Alamy](https://c8.alamy.com/comp/BGNJWH/witches-broom-a-parasite-on-a-white-spruce-tree-picea-glauca-in-the-BGNJWH.jpg)
Witches' broom, a parasite on a White spruce tree (Picea glauca) in the taiga, Denali NP, Alaska, USA Stock Photo - Alamy
![File:Black Spruce (Picea mariana) infected with Spruce Witch's Broom Rust (Chrysomyxa arctostaphyli) - Gros Morne National Park, Newfoundland 2019-08-20.jpg - Wikimedia Commons File:Black Spruce (Picea mariana) infected with Spruce Witch's Broom Rust (Chrysomyxa arctostaphyli) - Gros Morne National Park, Newfoundland 2019-08-20.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/6/69/Black_Spruce_%28Picea_mariana%29_infected_with_Spruce_Witch%27s_Broom_Rust_%28Chrysomyxa_arctostaphyli%29_-_Gros_Morne_National_Park%2C_Newfoundland_2019-08-20.jpg/1365px-Black_Spruce_%28Picea_mariana%29_infected_with_Spruce_Witch%27s_Broom_Rust_%28Chrysomyxa_arctostaphyli%29_-_Gros_Morne_National_Park%2C_Newfoundland_2019-08-20.jpg)
File:Black Spruce (Picea mariana) infected with Spruce Witch's Broom Rust (Chrysomyxa arctostaphyli) - Gros Morne National Park, Newfoundland 2019-08-20.jpg - Wikimedia Commons
![Picea glauca 'Iseli Witches Broom' / Dwarf Alberta Spruce | Conifer Trinomial | American Conifer Society Picea glauca 'Iseli Witches Broom' / Dwarf Alberta Spruce | Conifer Trinomial | American Conifer Society](https://duz1zqzp328bb.cloudfront.net/conifers/34374/_coniferGalleryImages/picea-glauca-iseli-witches-broom.jpg)
Picea glauca 'Iseli Witches Broom' / Dwarf Alberta Spruce | Conifer Trinomial | American Conifer Society
![What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA](https://organicplantcarellc.com/wp-content/uploads/2019/10/blog-withes-broom-douglas-fir.jpg)
What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA
![What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA](https://organicplantcarellc.com/wp-content/uploads/2019/10/blog-witches-broom-header-1200x675.jpg)
What Causes Witches' Broom In Trees? - Organic Plant Care LLC | Organic Lawn & Plant Health Service in Hunterdon, Morris, Somerset & Union Counties, NJ and Bucks County, PA
![PDF] Mutational witches' broom impact on the growth of the parent branch in several Pinaceae species | Semantic Scholar PDF] Mutational witches' broom impact on the growth of the parent branch in several Pinaceae species | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/35a3a5989610b8b45b03cb8678348f442d4e7941/2-Figure1-1.png)