Katz Blue Matthiola

Katz Blue is an upright Matthiola incana grown for blue cut-flower stems. PanAmerican Seed lists a 32-inch plant height and identifies it for high-tunnel and field production, with spring and autumn flowering. ## Flowers and use The [PanAmerican Seed plant detail]() gives a stem length of 32 inches and says Katz types produce approximately 50% double-flowering plants. It also notes that the series can flower earlier and later in the season, and in some climates year-round, with more uniform timing and greater heat tolerance than traditional field types. ## Growing Plant in sun. The grower lists four weeks for plug production and eight to thirteen weeks from transplant to finish; the page does not provide a mature width or USDA hardiness zone. Treat the listed 32-inch height as a plant-page measurement, not as a mature spread. ## Maintenance Support the planting with consistent moisture during active growth and harvest stems regularly for floral use. Remove spent stems and discard declining foliage at the end of a production cycle.