Greenhouse Generator

Greenhouse Generator builds photorealistic greenhouses inside Blender: a white-painted Victorian glasshouse with cresting and finials, a cedar lean-to against a brick wall, a curvilinear iron palm house, a geodesic dome, a polytunnel or a whole commercial Venlo range. Pick one of 30 designs from a picture gallery, then change anything. The greenhouse rebuilds live as you drag a slider.

Fifteen greenhouse types cover the real world of glasshouses: span house, lean-to, Victorian conservatory, curvilinear, A-frame, orangery, cold frame, Dutch light, polytunnel, gothic arch, gothic range, Venlo, geodesic dome, pavilion and palm house. Real proportions, real glazing bars, knee walls, doors, roof vents, gutters, downpipes and water butts.

The inside is furnished too: slatted staging, raised beds, nursery tables, a conservatory with a bistro table or a planted central bed. Plants fill it, from geraniums and tomatoes to palms and cacti, built as shared instances so a crowded greenhouse stays fast. Ivy grows over the frame with a port of Blender's classic IvyGen, and the glass weathers with dust, rain streaks, algae along the bars, condensation and broken panes.

Features
- 15 greenhouse types and 30 real-world designs, each fully editable
- Picture gallery sidebar: pick a design, a type or an interior layout by its picture
- 7 frame materials: painted wood, cedar, wrought iron, aluminium, powder coat, galvanized steel
- 5 glazings: clear, horticultural, frosted, polycarbonate and polythene film, with lapped panes
- Opening roof and side vents, single, double and sliding doors, broken and missing panes
- 7 interior layouts with benches, beds, pots, tools and props
- 31 plant species in 7 themes, including an abandoned, overgrown greenhouse
- Ivy that climbs the walls and roof, with leaves and rootlets
- Dirty windows: dust, rain streaks, algae, moss, condensation and wear, all live sliders
- PBR textures from Poly Haven, Low, Medium and High detail
- Works in Cycles and EEVEE

Requires Blender 4.2 or newer. Tested on Blender 4.2, 4.5 and 5.2 LTS.

Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the greenhouse_generator zip.

Usage

• Open the Greenhouse tab in the 3D viewport sidebar (N). With no greenhouse selected, click the big picture to pick a design and press Add Greenhouse, or open Browse by Type to see every design of a type. You can also use Shift+A, Greenhouse.
• With a greenhouse selected, the card at the top shows its design: click the picture to switch to another design, change the seed for a new variation, and set the detail to Low, Medium or High.
• The icon tabs hold every setting: Shape (type and size), Frame & Glass (frame material, glazing, vents, cresting, gutters), Base & Doors (knee wall, floor, doors), Interior (layout, benches, beds), Plants (theme, density, overgrowth), Ivy and Weathering (dirt, streaks, algae, condensation, wear, broken panes).
• Weathering sliders only change the look, so they update instantly. Delete removes the greenhouse with all its parts.

Each greenhouse is a root empty with its parts as children: structure, glass, interior, plants and ivy. Plants and ivy leaves are Geometry Nodes instances; apply the modifier to make them real meshes.

Which Blender versions are supported?

Blender 4.2 and newer. It is tested on Blender 4.2, 4.5 and 5.2 LTS.

Will a greenhouse full of plants slow my scene down?

No. Every plant is an instance of a shared plant model, so hundreds of plants cost little memory. The detail setting lowers or raises plant and frame detail for the whole greenhouse.

Where does the ivy come from?

It is a port of IvyGen, the ivy generator that shipped with Blender (GPL), rewritten to grow over the greenhouse frame and glass. Its original copyright notice is kept.

Does it work in EEVEE?

Yes, in both Cycles and EEVEE. Cycles gives the most realistic glass and shadows.