Chrysanthemum Shasta Alaska Seedling Tray

For best results with Chrysanthemum Shasta Alaska, plant one seedling plug per 4-inch or three or four per 10-inch container. Use well-drained soil with a pH of 6.0-7.0, EC of 1.5-2.5 mS/cm, and temperatures of 60-70 daytime and 50-60 nighttime. Feed 150-200 ppm N, 50-75 ppm P, and 150-200 ppm K. Provide full sun or partial shade. Pinch once after transplanting and use B-Nine if needed. Watch for aphids, spider mites, and powdery mildew.

White flowers with yellow centers are 3-4" in diameter, blooming from summer to fall.

Pinch once after transplanting.

Space containers for adequate airflow and sunlight penetration around the base and foliage of each plant. For Chrysanthemum Shasta Alaska, we recommend 18" between containers, adjusting for your  plants and space. Prioritize good circulation to prevent the spread of disease. 

Grow bushy plants and prevent legginess with good cultural practices, including proper fertilizer rates, watering, and light. This plant doesn't typically need chemical growth regulators but will respond to B-Nine at 2,500-5,000 ppm.

Watch for aphids, and spider mites. Use preventative measures in your greenhouse, including sanitary practices and allowing the soil to dry slightly between waterings. Implement an Integrated Pest Management plan to prevent severe damage from infestations. 

Aphids are small, soft-bodied insects that cause damage by sucking sap from plant tissue. They reproduce quickly and are particularly attracted to young growth. Curling and yellowed leaves, stunted growth, and stickiness on leaves are signs of an infestation. These insects also spread diseases and reproduce rapidly. Use biological controls or horticultural oils to discourage and kill aphids.

Spider Mites are tiny pests that cause stippling, yellowing, and webbing on foliage by feeding on plant sap. They flourish in warm, dry environments. Use correct water and fertilizing practices; over-fertilizing can attract spider mites. Proper humidity levels, predatory mites or ladybugs, and insecticidal soaps or oils may prevent or address a spider mite infestation.

You may see Powdery Mildew. Provide good airflow in your greenhouse, water at the base of each plant and allow the soil to dry between waterings, and implement an Integrated Pest Management Plan to prevent significant damage from diseases to your seedling plugs.

Powdery Mildew is a fungal disease that thrives in humid conditions, appearing as a white or gray coating on foliage and flowers. Provide good airflow in your greenhouse. We recommend horizontal airflow fans to help control humidity levels alongside a dehumidifier or manual venting. Remove and destroy infected plants and apply fungicides as needed or preventatively. Look for the active ingredients myclobutanil, trifloxystrobin, or potassium bicarbonate to combat Powdery Mildew threatening your seedling plugs.

We recommend planting one seedling plug per 4-inch or three to four per 10-inch container. Use well-drained soil and completely bury the ellepot centered or evenly spaced in the container. Water and pinch after transplanting.