lasthenia california ssp
TRANSCRIPT
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Lasthenia california ssp. macrantha
Natalie Walker HORT 5051: Plant Production II Wednesday, May 1, 2013
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Taxonomic Classification Lasthenia californica DC. ex Lindl. ssp.
macrantha (A. Gray) R. Chan Perennial goldfields Asteraceae family Historical Significance
http://plants.usda.gov/java/profile?symbol=LACAM3&photoID=lama6_003_ahp.tif
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Taxonomic Description Annual dicot Compact, mounded Simple, freely branched stems Fibrous roots Narrow, unlobed linear leaves Bright yellow flower heads (Ray & Disk flowers) Silver-gray glabrous fruits and seeds with awl-
like scales
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Native Geographic Distribution North America • California • Oregon
Zones 6-10 http://plants.usda.gov/java/profile?symbol=LACAM3&photoID=lama6_003_ahp.tif#
http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Lasthenia+californica+ssp.+macrantha
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Propagation Methods Seed Production Fields Treatment Sowing Germination Harvest
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Experiment Objectives
• Observe the effects of different soil medias on seedling development
Methods • Transplanted seedlings into two different soil media
types
Results • Little affect observed at their stages
Discussion • Crop scheduling requires more time before
experimental results may be observed
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Seeds 96 seeds sown in a 288-cell plug tray on February 19, 2013
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Seedlings Poor germination 18% germination
rate
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Transplant Transplanted 12
seedlings (6 seedlings per media) on April 22, 2013 into 4-inch pots
LC8 Professional Growing Media & Metro-Mix Professional Growing Media
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Growing On Performance
between soil types
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Crop Schedule Plug Production
-use 288-cell plug tray and well-drained, disease free seedling media Stage 1-Time of radicle emergence (7-14 days) Stage 2- Stem & cotyledon emergence (7-10 days) Stage 3- Development of true leaves (14-21 days) Stage 4- Ready for transplant (7 days)
Growing On -transplant into 4” standard pots with a Professional growing media -provide day time temperatures of 15°C and night time temperatures between 10° and 13°C -Fertilize weekly with a standard 15-0-15 fertilizer -No PGRs are necessary
Total Crop Time: 16-20 weeks
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Market Niche/ Benefits Coverage; groundcover Prolific flowering Bright color Attracts wildlife and pollinators Low maintenance Water conservation
http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Lasthenia+californica+ssp.+macrantha
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Improvements Hardiness Reduced time from germination to
flowering Spreading habit
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Questions?