Trifolium (willdenovi)
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Michael Herrera Nursery Manager Catalina Island Conservancy PO Box 2739 Avalon, California 90704 (310) 510-2904 (310) 510-3157 (fax) mherrera@catalinaconservancy.org www.catalinaconservancy.org |
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| Family Scientific Name: | Fabaceae | ||
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| Family Common Name: | Pea Family | ||
| Scientific Name: | Trifolium willdenovi Spreng. | ||
| Common Synonym: | Trifolium tridentatum Lindl. | ||
| Common Name: | Tomcat Clover | ||
| Species Code: | TRIWIL | ||
| Ecotype: | Catalina Island, California | ||
| General Distribution: | Tomcat clover is a common ,annual species that is found throughout southern California and the Channel islands. On Catalina Island, it inhabits grassy slopes, dry rocky banks and disturbed areas. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| ProductType: | Container (plug) | ||
| Stock Type: | Deepot 40 (40 cubic inch) | ||
| Time To Grow: | 4 Months | ||
| Target Specifications: | Height: N/A<br> Caliper: N/A<br> Root System: Firm root plug in container. | ||
| Propagule Collection: | We collect seeds during May and June. | ||
| Propagule Processing: |
Clover heads dry in paper bags in a warm, dry room. We clean the seeds by running material through a 1/4 inch screen or US Standard #5 sieve to release seeds. We sift product several times with a Graimans brand "W" pan (5/64ths)to remove debris. We sift with a #25 pan to removefine debris. We blow product at 25 setting to remove any remaining debris. After seeds have been cleaned, they are stored under refrigeration in air tight glass containers at 40 F and 40% RH. With 4 collections, seeds average 0.13 grams per 100 seeds. |
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| Pre-Planting Treatments: |
We have used a 5 minute 5% bleach solution to surface sterilize seed coats prior to testing or sowing. We scarify seeds by placing them into a 2 hour hot water soak and place them into a 4 week cold, moist stratification at 40F for 4 weeks. Germination percentages have ranged from 29 to 57%. We have had higher germination rates with non-stratified seeds. |
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| Growing Area Preparation/ Annual Practices for Perennial Crops: |
The James H. Ackerman Native Plant Nursery is located on Catalina Island off the coast of southern California. From 1993 to 2004, the average maximum and minimum temperatures have been 75.4 F and 46 F, with an average of 361 frost free days per year and annual rainfall of 14 inches. The facility is comprisedof shade houses, mist propagation house, and an outdoor growing area. All propagation environments are utilized at different stages of seedling growth to provide for the variance in temperature and shading requirements needed during the growing season. We irrigate all containers with an overhead emitter system in the shadehouses and use a drip system or hand water in the outdoor nursery. |
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| Establishment Phase: |
Seeds are germinated during late winter and early spring months in a shadehouse were they remain for several weeks. Seeds are directly sown into flats filled with a 1 inch layer of special seed germination mix of 1:1 (v:v) Sunshine Professional Growing Mix and sand on top of 4:1:1 (v:v:v) peat, perlite, and organic compost. We incorporate Osmocote time release fertilizer (9 month release rate) (14 N:14P2O5:14K2O) at the rate of « cup per 0.75 cubic yard of medium. Seeded flats are watered with an overhead emitter system as needed. Seeds germinate 2 to 4 weeks after sowing. |
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| Length of Establishment Phase: | 1 month | ||
| Active Growth Phase: |
After seedlings are well established and have at least 2 true leaves, they are transplanted into Deepot containers (40 cubic inches)filled with a growing medium of 4:1:1 (v:v:v) peat, perlite, and organic compost. Osmocote time release fertilizer (9 mo release rate) (14 N:14P2O5:14K2O) is incorporated into the medium at a rate of of « cup per .75 cubic yards of medium.Following transplanting, seedlings are moved to another shadehouse with more temperature variance where they remain for several weeks. Plants are in flower by early May. |
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| Length of Active Growth Phase: | 3 months | ||
| Hardening Phase: | No hardening is needed; this is an annual species. | ||
Citation:
Herrera, Mike; Takara, Janet. 2006. Propagation protocol for production of Container (plug) Trifolium willdenovi Spreng. plants Deepot 40 (40 cubic inch); Catalina Island Conservancy Avalon, California. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/04/20). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
