Time to Order Perennial Liners for 2026

Rooted in quality, connected across North America.

ThinkPlants partners with leading growers—from James Greenhouses in Georgia to DeVry Greenhouses in BC, Canada—bringing you a reliable supply of perennial plugs and liners no matter where you grow.

James Greenhouses–Georgia

Offers the full lineup of vegetative ThinkPlants perennials, as well as Alstroemeria Colorita liners and Heuger Helleborus liners. 

Gulley Greenhouse–Colorado

Specializes in pre-vernalized perennial liners. Look to Gulley for your early spring 72cell liners, Lupine liners, and more! 

Headstart Nursery–California

Offers a perennial selection curated for West coast growers, and specializes in seed plugs. 

Green Circle Growers–Ohio

Carries the full assortment of ThinkPlants vegetative and seed perennial varieties. 

Terra Nova Nurseries–Oregon

Offers the full assortment of Terra Nova Nurseries varieties as liners. Terra Nova specializes in Heuchera liners, and has the most unique selection of perennial genus on the market. 

Monrovia Nursery

Now offering high-quality shrub liners across North America. Shipping from their Oregon, Georgia, or California nursery locations. 

DeVry Greenhouses–British Columbia

Our West coast Canadian rooting station, offering a selection of West coast perennial liners as well as a mix of cold hardy varieties suited to the Prairie provinces. 

Linwell Gardens–Ontario

A quality liner producer offering our full assortment of vegetative perennials as 50cell or 102cell liners. 

Aldershot Greenhouses–Ontario

The newest ThinkPlants rooting station, Aldershot specializes in Heuger Helleborus liners and offers both 6" pre-finished liners and 40cell liners. 

Time to Book Clematis Liners for 2026

Look to Amerigo Farms for quality Clematis liners this season. 

Available in both 50 cell liners and 4" pre-finished liners to suit your production needs. Amerigo offers a wide range of Clematis varieties so you can be sure to find your preferred colors. 

Not sure what Clematis to order, or when? Reach out to Dan Webber, our resident Clematis expert. From cultural support to tailored programs, Dan is happy to help you reach your Clematis growing goals. 

Plant Pick of the Week

“It’s so difficult to pick one favourite Lavender. Syngenta Flowers’ new Aromatico™ Evolution and Forte Blue have exceptional fragrance, and the Vintro™ series is sturdy for overwintering success. Danziger’s Layla™ Presto Blue combines excellent branching with pleasant fragrance for a first-year flowering option perfect for containers.”



Anik Graves

ThinkPlants Program Manager

Perennial Pro Tip

Struggling to root blue Agastache?

Try Agastache Celestia instead.

Danziger bred for quick and easy propagation performance, excellent branching, and beautiful habit.

New 2025/26 ThinkPlants Catalog