Coreopsis (tripteris)

Shelby J. French Propagation Manager Mt. Cuba Center 3120 Barley Mill Road Hockessin, Delaware 19707 302 239 8819 302 239 5366 (fax) sfrench@mtcubacenter.org http://www.mtcubacenter.org/

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Family Scientific Name:	Asteraceae
Family Common Name:	Aster
Scientific Name:	Coreopsis tripteris
Common Name:	tall tickseed
Ecotype:	Jefferson County, Alabama The original progeny was collected from a plant growing in part shade on severe drought conditions of the sandstone outcrop; plants are found in the crevices of rock or depressions of organic debris.
General Distribution:	Native to North America, Coreopsis tripteris is found in Quebec and Ontario, Canada. In the United States it ranges from the eastern edge of Texas, Oklahoma and Kansas, east to Pennsylvania and south to Florida. Also including Southeast New York and southern Connecticut, Rhode Island and Massachusetts.
Propagation Goal:	Plants
Propagation Method:	Vegetative
ProductType:	Container (plug)
Stock Type:	1 gallon (potted from divisions), 1-3 months old when cuttings taken.
Time To Grow:	9 to 13 weeks
Target Specifications:	Well-rooted 1 quart container.
Propagule Collection:	Cuttings collected during summer (May - July) from non-flowering shoots. Zone 7A/6B.
Propagule Processing:	Tip cuttings from stock plants are taken in early morning. Stock plants are well hydrated the afternoon prior. Cuttings taken when new growth is semi-soft and just starting to firm. We typically process cuttings the same day taking them.
Pre-Planting Treatments:	Tip cuttings are 10-15 cm (4-6 in) in length, 2-3 nodes, Hormodin 1, IBA 0.1%. Cuttings are recut at base and the lower leaves removed. Extended internodal length can result in only a single node above and below the soil. 100% horticulture grade perlite is the preferred rooting medium. Peat based media stays too moist and results in fewer, healthier roots. We obtained 100% rooting for cuttings taken in May and 93 - 97% rooting for cuttings taken in July. Rooting percentages greatly declined when stock had formed flower buds, 27-39%.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Cuttings are placed in a propagation house with intermittent mist, cycling every 6 minutes with 12-15 seconds of mist time. 4 weeks after sticking cuttings, frequency of the mist interval is increased to 12 minute intervals. Bottom heat is provided by hot water, in tubes, underneath the flats at 18-24˚C (65-75˚F). Air temperature is set at 17˚C (62˚F) night temperature (minimum). Evaporative coolers circulate cooled air during days were the air temperature is above 27˚C (80˚F), keeping greenhouse air temperature below 32˚C (92˚F).
Establishment Phase:	Cuttings begin to form roots 2-3 weeks after sticking. 5 weeks after sticking, rooted cuttings are removed from mist.
Length of Establishment Phase:	5 weeks
Active Growth Phase:	After cuttings are well established with multiple roots (approximately 5 weeks after sticking) they are transplanted into 1 quart pots using a commercial potting media. Plants are put in a shaded greenhouse for 1-2 weeks adjustment to light, before moving to a full sun exposure in a glass greenhouse.
Length of Active Growth Phase:	3 to 5 months
Hardening Phase:	Pots are overwintered in a cold but above freezing greenhouse 6˚C (42˚F). Plants can be hardened off in several weeks in spring, and planted in early May.
Length of Hardening Phase:	3 to 5 weeks
Other Comments:	Cuttings can be taken as soon as stock plants are actively growing and until flower buds develop, at 4-6 week intervals. It is not recommended to take cuttings from stock plants with flower buds forming do to poor rooting and increased length of rooting time. Stock plants can be cut back until July 22 without delaying normal bloom time. A plant cut back Aug 11 will delay bloom but will still result in a fall flowering plant.
References:	Cullina, W. (2000). Growing and propagating wildflowers of the United States and Canada. New York: Houghton Mifflin Company. Illinois wildflowers. (2015) Tall tickseed. Retrieved from http://www.illinoiswildflowers.info/index.htm Missouri Botanical Garden. (n.d.) Coreopsis tripteris. Retrieved from http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=g470 U.S.D.A. Natural Resources Conservation Service. (n.d.) Coreopsis tripteris. Retrieved from http://plants.usda.gov/core/profile?symbol=cotr4 Weakley, A. S. (2015, May 21). Flora of the Southern and Mid-Atlantic States. Retrieved from http://www.herbarium.unc.edu/FloraArchives/WeakleyFlora_2015-05-29.pdf

Citation:

French, Shelby J.. 2016. Propagation protocol for production of Container (plug) Coreopsis tripteris Plants 1 gallon (potted from divisions), 1-3 months old when cuttings taken.; Mt. Cuba Center Hockessin, Delaware. 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.