Iliamna (bakeri)

Lee Riley Horticulturist USDA FS - Dorena Genetic Resource Center 34963 Shoreview Road Cottage Grove, Oregon 97424 541-915-7324 541-767-5709 (fax) leriley@fs.fed.us

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Family Scientific Name:	Malvaceae
Family Common Name:	Mallow
Scientific Name:	Iliamna bakeri
Common Name:	Baker’s wild hollyhock
Species Code:	ILBA
Ecotype:	Rogue River-Siskiyou National Forest, Oregon
General Distribution:	It is native to northern California and southern Oregon, where it grows in mountain forests and woodland on volcanic soils
Propagation Goal:	Plants
Propagation Method:	Seed
ProductType:	Container (plug)
Stock Type:	262 ml (16 in3) container
Time To Grow:	18 weeks
Target Specifications:	Stock Type: Container seedling Root System: Firm plug in container.
Pre-Planting Treatments:	Seeds are placed in fine mesh bags, soaked for 10 seconds in water at 95 °C and then immediately placed in cold water. Seeds are then placed into a 1% hydrogen peroxide (3:1 water/3% hydrogen peroxide) soak for 24 hours, rinsed, and placed in water for an additional 24 hours. Mesh bags are layered in peat in a covered container. The containers are placed in refrigeration at 1 to 3 °C for 60 days. It is very important to check seeds in peat weekly. If mold is evident, seeds should be treated with 1% hydrogen peroxide.
Growing Area Preparation/ Annual Practices for Perennial Crops:	Greenhouse growing facility. Seeds are directly sown into containers. Seeds are lightly covered with nursery grit. Growing medium used is 40:20:20:20 peat:composted fir bark:perlite:pumice with Nutricote controlled release fertilizer (18N:6P2O5:8K2O with minors; 180-d release rate at 21C) at the rate of 1.5 gram Nutricote per 262 ml container. Seedlings remain in the greenhouse for 16 weeks, and are then moved to an outdoor growing area to induce dormancy. Average growing season of nursery is from mid-March until early October.
Establishment Phase:	Germination is moderate to high, depending on seed quality. It is usually complete in 2 to 3 weeks.
Length of Establishment Phase:	3 weeks
Active Growth Phase:	Seedlings grow rapidly throughout the active growth phase. Following germination, plants are fertilized with soluble 12-2-14-6Ca-3Mg at 100 ppm for 2 weeks. During the growing season, fertilization depends on weather. Soluble 20-9-20 NPK, 20-18-18 NPK, or 17-5-24 NPK at a range of 100 to 150 ppm is applied weekly throughout the growing season. Flowering occurs within 3 months.
Length of Active Growth Phase:	16 weeks
Hardening Phase:	No dry-down is done to induce dormancy. Seedlings are moved to an outdoor growing area in mid-September.
Length of Hardening Phase:	3 weeks
Harvesting, Storage and Shipping:	Harvest Date: Mid-October Storage Conditions: Seedlings are usually outplanted in fall to early winter. No storage except in outdoor growing area. Plants are well irrigated prior to shipping and shipped in containers.
Other Comments:	This species is endangered on the state level in Oregon
References:	California Native Plant Society. nd. Baker’s wild hollyhock Iliamna bakeri. URL: https://calscape.org/Iliamna-bakeri-() (accessed 7 Oct 2018). Dorena Genetic Resource Center Propagation Records, unpublished. [NRCS] USDA Natural Resources Conservation Service. Iliamna bakeri (Jeps.) Wiggins Baker’s wild hollyhock. URL: https://plants.usda.gov/core/profile?symbol=ILBA (accessed 7 Oct 2018).

Citation:

Riley, Lee E.; Klocke, Allison. 2018. Propagation protocol for production of Container (plug) Iliamna bakeri Plants 262 ml (16 in3) container; USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/02). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.