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Protocol Information

Native Plant Nursery
USDI NPS - Glacier National Park
West Glacier, Montana 59936
(406) 888-7835


Family Scientific Name: Rosaceae
Family Common Name: Rose family
Scientific Name: Holodiscus discolor (Pursh) Maxim.
Common Synonym: Sericotheca discolor (Pursh) Rydb.
Common Name: Ocean-spray
Species Code: HOLDIS
Ecotype: Douglas-fir forest, Fish Creek, 1100m elev.
General Distribution: H. discolor occurs from B.C. to southern California, east to western Montana, Idaho, and northeastern Oregon; from coastal bluffs to lower elevation mountains.
Propagation Goal: Plants
Propagation Method: Seed
Product Type: Container (plug)
Stock Type: 172 ml containers
Time To Grow: 18 Months
Target Specifications: Stock Type: Container seedling
Height: 22 cm
Caliper: n/a
Root System: firm plug in 172 ml containers.
Propagule Collection: Seeds are collected when achenes turn brown in October. Seeds are hand stripped from shrubs and collected in paper bags.
Seeds are kept in a well ventilated drying shed prior to cleaning.
Propagule Processing: Seeds are very small and is best cleaned by hand-rubbing the inflorescences against screens.
Seed longevity is unknown.
Seed dormancy is classified as physiological dormancy.
Seeds/Kg: 11,700,000/kg
% Purity: 100%
% Germination: 50%
Pre-Planting Treatments: Seed requires a 5 month cold, moist stratification.
Growing Area Preparation/
Annual Practices for Perennial Crops:

Greenhouse and Outdoor Nursery growing facility.
Sowing Method: Direct Seeding or Transplanting Emergents.
Growing medium used is 6:1:1 milled sphagnum peat, perlite, and vermiculite with Osmocote controlled release fertilizer (13N:13P2O5:13K2O; 8 to 9 month release rate at 21C) and Micromax fertilizer (12%S, 0.1%B, 0.5%Cu, 12%Fe, 2.5%Mn, 0.05%Mo, 1%Zn) at the rate of 1 gram of Osmocote and 0.20 gram of Micromax per 172 ml conetainer.
Greenhouse temperatures are maintained at 21 to 25C during the day and 16 to 18C at night. Seedlings are hand watered and remain in greenhouse until mid May. Seedlings are then moved to outdoor nursery for the remainder of the growing season.
Seedlings are irrigated with Rainbird automatic irrigation system in early morning until containers are thoroughly leached.
Average growing season of nursery is from late April after snowmelt until October 15th.
Establishment Phase: Seeds or germinants are lightly covered with a thin layer of perlite after sowing.
Germination is non-uniform. Seedlings develop true leaves 1 week following germination and are thinned at this stage.
Length of Establishment Phase: 4 weeks
Active Growth Phase: Seedling growth is rapid following germination. Plants respond to thinning quickly and produce 4 to 6 true leaves in 3 weeks. Plants are fertilized with 20-20-20 liquid NPK at 100 ppm and increase in height to 16 centimeters in 15 weeks.
Length of Active Growth Phase: 16 weeks
Hardening Phase: Plants are fertilized with 10-20-20 liquid NPK at 200 ppm during September. Irrigation is gradually reduced in September and October. Plants are leached with clear water before winterization.
Length of Hardening Phase: 4 weeks
Harvesting, Storage and Shipping: Total Time to Harvest: 11 Months in 172 l container. 1.8 years in 3 L (1 gal) container.
Harvest Date: September
Storage Conditions: Overwinter in outdoor nursery under insulating foam and snow.
Length of Storage: 5 months
Outplanting performance on typical sites: Outplanting Site: Fish Creek, Glacier National Park, MT.
Outplanting Date: Spring
Other Comments: Seeds require a prolonged stratification for adequate germination.
Seed propagated stock in 3L (1 gallon) were multi-branched and 45 centimeters in height 2 years after germination.
This species is recognized as a disturbance indicator. It grows well in dry, rocky sites in both forested and non forested communities; thus it is recommended for erosion control on road cuts.
References: Flora of the Pacific Northwest, Hitchcock and Cronquist, University of Washington Press, 7th printing, 1973.

Seeds of the Woody Plants in North America, Young and Young, Dioscorides Press, 1992.

Seeds of the Woody Plants in the United States, Agriculture Handbook No. 450, U.S.F.S., Washington D.C., 1974.

Glacier National Park Propagation Records, unpublished.

Citation:
Wick, Dale; Luna, Tara.; Evans, Jeff. 2008. Propagation protocol for production of container Holodiscus discolor (Pursh) Maxim. plants (172 ml containers); USDI NPS - Glacier National Park, West Glacier, Montana. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 20 October 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.
 

Protocol Information

Native Plant Nursery
USDI NPS - Glacier National Park
West Glacier, Montana 59936
(406) 888-7835


Family Scientific Name: Rosaceae
Family Common Name: Rose family
Scientific Name: Holodiscus discolor (Pursh) Maxim.
Common Synonym: Sericotheca discolor (Pursh) Rydb.
Common Name: Ocean-spray
Species Code: HOLDIS
Ecotype: Douglas-fir forest, Fish Creek, 1100m elev.
General Distribution: H. discolor occurs from B.C. to southern California, east to western Montana, Idaho, and northeastern Oregon; from coastal bluffs to lower elevation mountains.
Propagation Goal: Plants
Propagation Method: Vegetative
Product Type: Container (plug)
Stock Type: 3 L containers
Time To Grow: 17 Months
Target Specifications: Stock Type: Container cuttings
Height: 22 cm
Caliper: n/a
Root System: firm plug in 3L (1 gallon) containers.
Propagule Collection: Vegetative Propagation Method: Pre-Rooting
Type of Cutting: Summer softwood stem cuttings collected in early July.
Propagule Processing: Cuttings are kept moist and under refrigeration prior to pre treatment.
Pre-Planting Treatments: Cuttings are cut into 15 cm lengths with 1/3 basal leaves removed. Cuttings were placed in a 2 minute fungicide bath to remove surface pathogens and treated with 2000 ppm IBA powder, placed into the mistbed with bottom heat.
Rooting %:33%
Growing Area Preparation/
Annual Practices for Perennial Crops:

The outdoor mistbed has automatic intermittent mist that is applied at 6 second intervals every 6 minutes. Too frequent misting will result in leaf and stem rot. Misting frequency is increased or decreased according to daily outdoor temperature and wind.
Bottom heat is maintained at 21 C with heating cables 12 cm beneath rooting medium. Rooting medium is 50% perlite and 50% sand. Mistbed is covered with shadecloth during rooting. After cuttings are potted, they are moved to an outdoor shadehouse for 4 weeks. They are later moved to full sun exposure in the outdoor nursery and are irrigated with Rainbird automatic irrigation system in early morning until containers are thoroughly leached.
Average growing season of nursery is from late April after snowmelt until October 15th.
Establishment Phase: Time to Transplant: 8 weeks to rooting.
Cuttings that were prerooted were lifted out of mistbed after adequate root systems were formed. Roots generate from the nodes below the surface of the rooting medium.
Length of Establishment Phase: 8 weeks
Active Growth Phase: After cuttings were lifted from the mistbed, they were potted into 3L containers.
Growing medium used is 6:1:1 milled sphagnum peat, perlite, and vermiculite with Osmocote controlled release fertilizer (13N:13P2O5:13K2O; 8 to 9 month release rate at 21C) and Micromax fertilizer (12%S, 0.1%B, 0.5%Cu, 12%Fe, 2.5%Mn, 0.05%Mo, 1%Zn) at the rate of 5 grams of Osmocote and 2 grams of Micromax per conetainer.
Cuttings were irrigated after potting and placed in the shadehouse for 4 weeks. After establishment in the shadehouse, plants were moved to full sun exposure in the outdoor nursery.
Length of Active Growth Phase: 8 weeks
Hardening Phase: Irrigation is gradually reduced in September and October. Plants were given one final irrigation prior to winterization.
Length of Hardening Phase: 4 weeks
Harvesting, Storage and Shipping: Total Time to Harvest: 1.5 years from cuttings
Harvest Date: September
Storage Conditions: Overwinter in outdoor nursery under insulating foam and snow.
Length of Storage: 5 months
Other Comments: Holodiscus discolor is recognized as a disturbance indicator.
It grows well in dry, rocky sites in both forested and non forested communities. It is recommended for erosion control on road cuts.
References: Flora of the Pacific Northwest, Hitchcock and Cronquist, University of Washington Press, 7th printing, 1973.

Seeds of the Woody Plants in North America, Young and Young, Dioscorides Press, 1992.

Seeds of the Woody Plants in the United States, Agriculture Handbook No. 450, U.S.F.S., Washington D.C., 1974.

Glacier National Park Propagation Records, unpublished.

Citation:
Wick, Dale; Luna, Tara. 2008. Propagation protocol for vegetative production of container Holodiscus discolor (Pursh) Maxim. plants (3 L containers); USDI NPS - Glacier National Park, West Glacier, Montana. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 20 October 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.
 

Protocol Information

Betty Young
Nurseries Sr Manager
Bldg 201, Fort Mason
San Francisco, California 94123
415-331-6917
415-331-7521
byoung@ggnpa.org


Family Scientific Name: Rosaceae
Family Common Name: Rose Family
Scientific Name: Holodiscus discolor (Pursh) Maxim.
Common Synonym: Spiraea discolor Pursh
Common Name: Oceanspray
Species Code: HOLDIS
Ecotype: Marin County, California
General Distribution: H. discolor occurs from B.C. to southern California, east to western Montana, Idaho, and northeastern Oregon; from coastal bluffs to lower elevation mountains.
Propagation Goal: Plants
Propagation Method: Seed
Product Type: Container (plug)
Stock Type: Deepot 40
Target Specifications: Height: N/A
Caliper: N/A
Root System: Firm plug in container.
Propagule Collection: Seeds are collected between October 1st and December 1st.
Mature inflorescences are brown.
Seeds are 1 mm long or less.
Propagule Processing: Seed Cleaning:Rub Clusters over a sieve and continue until most seeds fall through.
Storage Conditions: Seeds are kept dry and stored in a refrigerator.
Seeds/gram: 5,000
Pre-Planting Treatments: Soak seed in fresh water for 3 hours. Drain and place in a plastic freezer bag with an equal amount of ph neutral peat moss. Stratify in the refrigerator at 40F for 3 to 4 months or until seeds begin to germinate. When radicles are seen, sow the entire seed lot.
Growing Area Preparation/
Annual Practices for Perennial Crops:

Fully Controlled Greenhouse.
Sowing Method: Transplanting Germinants.
5 grams of seeds are sown per flat containing Sunshine Mix #4 Aggregate Plus (peat moss, perlite, major and minor nutrients, gypsum, and dolomitic lime).
Seeds are mixed with media to sow and are surface sown.
Flats are watered in with an automatic mist and irrigation system.
Seeds are sown on May 1st.
% Germination: 5%
Establishment Phase: Seeds germinate 14 days after sowing.
Seedlings are transplanted 14 days after germination to individual containers 2"x10" tubes (Deepot 40) containing standard potting mix of peat moss, fir bark, perlite, and sand.
Transplant Survival averages 75%.
Length of Establishment Phase: 28 days
Active Growth Phase: After seedlings are established, they are moved to the shadehouse (under 30% shade)and grow rapidly.
Fertilize with Nutricote NPK (13-13-13) 3 months after transplanting.
Prune back 2 months after transplanting and as necessary.
References: A California Flora and Supplement, Munz, P., University of California Press, Berkeley and London, 1973.

Citation:
Young, Betty 2001. Propagation protocol for production of container Holodiscus discolor (Pursh) Maxim. plants (Deepot 40); , San Francisco, California. In: Native Plant Network. URL: http://www.nativeplantnetwork.org (accessed 20 October 2014). Moscow (ID): University of Idaho, College of Natural Resources, Forest Research Nursery.