Wildlife Reserves
Planet Zoo 2 Invasive Flora: How to Find and Remove It
Invasive Flora is the count of plants in a Wildlife Reserve that do not belong there. Every one left lowers the reserve's Biodiversity stars. Here is how to spot them, clear them in one pass and what to do next.
Last updated Game version: Update 1.0.9 (November 5, 2026)
Quick answer: how to find invasive flora
- Open the Demolish Brush: in the Wildlife Reserve it is the last tool at the bottom of the tools menu on the left. Invasive plants show up in red while it is open.
- Keep only Nature: switch the brush's filters to Nature, so paths, facilities and water stay as they are.
- Drag over the red plants: make the brush bigger for large patches and smaller next to plants you want to keep.
- Check the count: Invasive Flora counts what is left in the whole reserve, not only in your Ecosystems, so keep going until none are left.
Invasive flora checklist
Ten steps to find the plants, clear them and turn the ground into an Established Ecosystem.
0 of 10 steps ticked. Your ticks stay in this browser.
What invasive flora is
Frontier's Wildlife Reserves guide describes Invasive Flora as the number of invasive plant species in your reserve: plants that are not native to its location and harm the local environment. It sits next to Environmental Pollution in the Ecosystem Rating, which, with the Research Rating, makes up the reserve's Biodiversity Rating. Remove all of it: the plants do nothing for any Ecosystem, and every one left holds the stars down.
How to find it: look for red
To see where the plants are, pick the Demolish Brush: in the tools menu on the left it is the last button, below the Ecosystem Brush, and while it is open the invasive plants show up in red. An Ecosystem's own requirements panel uses red the same way, for anything that is a problem there. The count covers the whole reserve, so once your Ecosystems are clean, zoom out and sweep the land around them.
How to remove it without breaking anything
The Demolish Brush deletes whatever it touches, but Frontier's Basics guide explains its filters: you can include or leave out Nature, Scenery, Facilities and Exhibits, Path Extras, Paths, Habitat Objects, Barriers, Rides and Tracks, and Water. Keep only Nature on while you clear plants, so your research equipment, paths and water stay put, and change the brush size for big patches or tight corners. If something you wanted goes, Left Ctrl + Z brings it back on PC. Environmental Pollution lowers the same rating, so clear it with the brush in the same pass.
After the clean-up
A cleared patch is the start of an Ecosystem, not the end. Paint it with the Ecosystem Brush, then use the Nature Brush with the Foliage Type the Ecosystem asks for until its area, terrain and nature needs are met and it changes from Invalid to Established. It turns Flourishing once released animals fill every role it lists: the Planet Zoo 2 Ecosystem Roles page shows which animals fill each one, and for the water Ecosystems the Planet Zoo 2 Wetland Engineers page says which animal your reserve needs.
More stars count in Franchise: accreditation tier 3 needs a Wildlife Reserve with 2 stars, as our Planet Zoo 2 accreditation tiers page shows. The whole route from an empty reserve to a released group is in the Planet Zoo 2 Wildlife Reserves guide.
Planet Zoo 2 invasive flora questions
How do you find invasive flora in Planet Zoo 2?
Open the Demolish Brush in the Wildlife Reserve: it is the last tool at the bottom of the tools menu on the left, and invasive plants show up in red while it is open. The Invasive Flora count covers the whole reserve, so look beyond your Ecosystems too.
What is invasive flora in Planet Zoo 2?
Plants in a Wildlife Reserve that are not native to the reserve's location and harm the local environment. The Invasive Flora count lowers the reserve's Ecosystem Rating, one of the two parts of its Biodiversity Rating, so Frontier's guide says to remove all of it.
How do you remove invasive flora in Planet Zoo 2?
With the Demolish Brush. Set its filters to Nature only so paths, facilities and water stay, change the brush size to suit the patch, and drag it over the plants shown in red. On PC, Left Ctrl + Z undoes a deletion.
Does invasive flora lower the Biodiversity Rating?
Yes. It counts against the Ecosystem Rating, which together with the Research Rating makes up the reserve's Biodiversity stars. Those stars matter in Franchise: accreditation tier 3 needs a reserve with 2 stars.
Why is my invasive flora count not going down?
The count covers the whole Wildlife Reserve, not only the Ecosystems you painted. Keep the Demolish Brush open, look over the rest of the reserve for plants shown in red, and check that its filters include Nature.
Sources
- Planet Zoo 2 player guide: Wildlife Reserves, on Invasive Flora and Ecosystems (official)
- Planet Zoo 2 player guide: The Basics, on the Demolish Brush and its filters (official)
Checked against the official pages on November 5, 2026. Official information can change. Each page shows its check date; game data appears here only once a source supports it.
Continue reading
Next stepReserve cleared? See which animals fill the roles your Ecosystem needs.Planet Zoo 2 Ecosystem Roles by AnimalWhich animals fill each Ecosystem Role, from Low Browsers to Seed Dispersers, with a finder by role and reserve for Flourishing Ecosystems.Go there Related pages
ReservesPlanet Zoo 2 Wildlife Reserves: Release GuideHow releasing animals into Wildlife Reserves works: release groups and their requirements, restoring Ecosystems and building a Research Network.
Ecosystem RolesPlanet Zoo 2 Wetland Engineers: All 3 AnimalsThe three Wetland Engineers, which one each Wildlife Reserve needs, and the twelve water Ecosystems that will not flourish without one.
AccreditationPlanet Zoo 2 Accreditation Tiers & UnlocksWhat each of the five accreditation tiers asks for in Career and Franchise, and which animals each tier unlocks in Trading, with a lookup by animal.