Stateside Tubers- Small to Mid Grower Program

Express Seed Company has partnered with Kapiteyn to bring Calla speculation over to the US for lower minimum orders this season.

Kapiteyn’s Calla Lilies are known for their exceptional quality, strong performance, and leading genetics. Through this partnership, Express Seed is making it easier than ever for you to access these premium varieties in smaller, more flexible quantities.

Orders will ship directly from Green Circle Growers for fast, reliable delivery to your greenhouse, available from week 48 through week 5, or while supplies last. Order directly from your local Express Seed Representative. These Calla tubers will finish in 8-10 weeks so perfect for an Easter 2026 finish!

Don’t miss this opportunity to grow with Kapiteyn’s proven Calla genetics, now more accessible than ever!

First Year Flowering Perennials

Whether you are looking for perennials to grow in quarts, gallons, combinations, or more, we have a full lineup of First Year Flowering (FYF) perennials to suit any program. 



Danziger's entire perennial portfolio has been selected for First Year Flowering and performance in propagation. For tailored recommendations for your perennial program, reach out to Zoltan Kovacs at zkovacs@thinkplants.com.

Dianthus Delilah™

Floriferous with small, 
semi-double flowers.

First Year Flowering for easy programing, no cooling benefit.

Highly fragrant blooms. High impluse plant at retail.

Learn More

Erysimum SunStrong™


Quick in production and easy to program. New Yellow and Orange Imp additions are wonderfully fragrant. Heat and humidity tolerant. First Year Flowering.

Learn More 

Leucanthemum Lucille™


Lush, First Year Flowering, no cooling benefit. Little to no photoperiodic requirement, making it the first Leucanthemum in color to market. Profuse bloomer Spring through Fall. Learn More

Plant Pick of the Week

Perovskia Zephyr™ Compact Blue

• Densely branched and compact habit make Zephyr the best choice for small to mid sized containers
• Soft blue flowers are held above fine foliage all Summer long
• Heat loving, drought tolerant, and pollinator friendly
• URCs can be found at Danziger–Guatemala

Paula Scott

ThinkPlants Marketing Manager

Photos taken at Colorado State University (CSU) Flower Trial Gardens in Ft Collins, CO - August 2025

Perennial Pro-Tip

Pot Calla Growing Recommendations

Water management is perhaps the most crucial aspect of growing your pot callas. Luckily, Kapiteyn has created a week-by-week culture guide to help you walk through watering, PGRs, and everything else you need to know to produce happy, healthy, beautiful calla lilies.

2025/26 ThinkPlants Catalog