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The Forest Service National Center for Reforestation, Nurseries, and Genetic Resources (RNGR) is a leading source of technical information for nurseries and land managers regarding production and planting of trees and other native plants for reforestation, restoration, and conservation.

 
NPN Protocol Details Image

Campanula (rotundifolia)

Jan Schultz
Forest Plant Ecologist
USDA FS - Hiawatha National Forest
1030 Wright Street
Marquette, Michigan 49855
906.228.8491
906.228.4484 (fax)
jschultz@fs.fed.us
http://plant-materials.nrcs.usda.gov/copmc/

Family Scientific Name: Campanulaceae
Family Common Name: Bellflower Family
Scientific Name: Campanula rotundifolia L.
Common Name: Harebell/Bluebell
Species Code: CARO2
General Distribution: Found in dry woodlands, rocky outcrops, and sandy shorelines. Full sun to light shade. Blue-violet bell shaped flower. 4"-12" in height.
Propagation Goal: plants
Propagation Method: seed
ProductType: Container (plug)
Time To Grow: 0
Propagule Collection: Seed is collected by hand from locally native plants in the eastern central Upper Peninsula. The plant blooms from June to September. The seeds are very tiny and are harvested in September.
Propagule Processing: Seeds are not cleaned. Dry seeds for 1-2 weeks in open paper bags or open Rubbermaid-style bins, shaking or turning seed heads. Once seeds have been dried begin stratification.
Pre-Planting Treatments: Stratification: mix the seeds with an equal amount of vermiculite or perlite. Put mixture into a Ziploc-style bag or a Rubbermaid-style container. Seal the container and proceed with 1-3 months of moist cold stratification in a cool dry place (refrigerator or cold garage). Cold store until planted (up to 3 years).
Growing Area Preparation/
Annual Practices for Perennial Crops:
Propagation Environment: Greenhouse film is made of Standard U.V. 3 HL Clear 6 mil (J.R. Johnson's Greenhouse Supply Inc.) Fans run continuously to circulate the air. Vents open during the summer months for cooling. Container Type: grows best in 24 cell (2" diameter)14"x8.5"x4" deep flats. Can be grown in virtually any size plug. Sowing Media: Scotts Redi-earth Plug and Seedling Mix. Contains vermiculite, and sphagnum peat moss. Soil is sterile.
Thoroughly moisten the soil with water, mixing in the water with a trowel. Cover the holes in the bottom/sides of the plug tray cells with newspaper so that the soil does not fall out. Fill cells with damp soil press soil down with a spoon. Refill the cell plugs with soil to the top, this time not pressing it down. Water the soil in the plug cells again. Sow the seeds by hand at a rate of about 3 seeds in each cell. Cover the seeds with a thin amount of soil. Sow year-round due to variable success rates.
Establishment Phase: From Jan. until Aug. the greenhouse thermostat is set at 65 degrees F both day and night. Ambient greenhouse temperatures may reach 100 degrees F during the day in the summer. From Sept. thru Dec. the thermostat is set at 55 degrees F. During this season ambient greenhouse temperatures may reach 75 degrees F during the day. The greenhouse holds plants at all stages of growth so the temperature setting stays the same for all plants at all stages of growth. Soil is kept consistently damp during germination. Water using a fine mist or light hose setting only. Newly planted trays are placed on the south side of the greenhouse. No artificial light is used.
Active Growth Phase: The soil does not need to be consistently moist. Move trays to cooler north greenhouse tables. No fertilizers are used.
Hardening Phase: In early-late spring, mature plants can be moved into a cold frame with a cover of material that diffuses sunlight to prevent scorching of the plants. When danger of frost has passed leave plants outside. Water less frequently.
Harvesting, Storage and Shipping: In the Upper Peninsula, flats are transplanted into the field from late May to early October. Flats that are not planted in the summer remain in the greenhouse for another season.
Other Comments: Attracts hummingbirds. Plugs very delicate and challenging to establish. Most of the seeds germinate, however few make it long enough to be transplanted into the field. A filler may be needed to adequately disperse seed in restoration. First true leaves (basal) unlike others.

Citation:

Schultz, Jan; Beyer, Patty; Williams, Julie. 2001. Propagation protocol for production of Container (plug) Campanula rotundifolia L. plants USDA FS - Hiawatha National Forest Marquette, Michigan. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/01). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.