Mathilda™ Yellow Matthiola

Mathilda™ Yellow is an upright greenhouse stock with uniform yellow flowers and 32-inch stems. PanAmerican Seed lists plant height at 25–32 inches, a spring-flowering Group 2 schedule, and production windows from winter through autumn. Selectable plants produce about half double-flowering seedlings, which can be sorted at the young-plant stage. [PanAmerican Seed](https://www.panamseed.com/products/074600895006060/matthiola-mathilda-yellow/). ## Growing Grow in full sun in a greenhouse and plan transplanting around the intended season. The supplier gives a five- to six-week plug crop period, followed by 11–12 weeks to finish in winter, eight to nine weeks in spring, six to eight weeks in summer, or four to seven weeks in autumn. Starting earlier than the listed windows can delay flowering. ## Maintenance Select out single-flowered seedlings when a double-flowered crop is preferred. Use the seasonal schedule to plan stem harvests; the exact timing depends on the production window and local conditions. Mathilda is bred for uniform habit and timing, and the series can support extended greenhouse production across seasons.