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Guide to Growing Ornamental Grasses in Containers

Here is a breakdown of key factors for successful containerized grower production based on grass type:

Grass Categories:

• Cool Season Grasses (60-75°F): Thrive in cool weather, actively growing in late winter/early spring. Flowering occurs from late spring to early summer. Growth slows in summer heat, with some dormancy. Some resume growth in fall. They can be evergreen or seasonally dormant.
• Warm Season Grasses (75-90°F): Prefer warm temperatures. Growth begins in mid-spring with flowering in late summer/fall. They become dormant before winter.
• Sedges (Carex): Not true grasses, but often grouped with them. Mostly evergreen with clumping or spreading habits. Offer a variety of foliage colors and variegations. Prefer partial shade (some tolerate full or partial shade).

Production Considerations:

Timing:

• Cool Season Grasses: Receive stock in late summer/early fall for spring sales or larger containers. Planting at this time allows for bulking during cooler months. Spring planting is suitable for smaller containers as early flowering may limit bulking time.
• Warm Season Grasses: Receive stock in late spring to mid-summer. Avoid fall deliveries. Provide warmth (<60°F) for bulking until established. Avoid late winter/early spring planting unless significant heat is available.
• Sedges: Receive and plant from early spring to late summer, avoiding fall planting. Mid- to late-summer planting is often ideal for bulking before the following year's sale.

General Tips:

• Planting Depth: Avoid planting liners or bareroot too deep or shallow. Match the original soil line to the new container mix. Ensure good root contact and eliminate air pockets.
• Light: Most ornamental grasses prefer full sun in landscapes. However, containerized production often benefits from some shade (35%). Certain grasses (Carex, Chasmanthium, Hakonechloa) thrive in lower light.
• Watering: Keep newly potted grasses moist, not wet, until established. Follow established watering guidelines (table not included) for container production.

By understanding these key differences and implementing these tips, you can ensure your ornamental grasses thrive in containers and become a successful addition to product line.