Download - Global Garden by Sarada Krishnan
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Sarada KrishnanDenver Botanic Gardens
March 28, 2013
Global Gardens
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Vision:Bring global relevance to Denver Botanic Gardens through implementation of diverse and sustainable programs achieving global transformation by connecting people with plants
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Program Areas1. Agriculture
Development2. Botany3. Conservation4. Horticulture
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Program Goals - Horticulture
Expansion of DBG’s Steppe collection through plant explorationIntroduction of plants
suited to our climateServe as resource for
Botanic Garden development
Offer horticultural training – capacity building
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Characteristics of Steppe Climate
Middle of the continent, in the lee of high mountains
Low precipitation – trees cannot grow
Plants adapted to drought conditions – small with extensive root systems
Cold winters with dry winds
Cyclic droughts
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•DBG has the only South African Garden in a cold temperate climate•Over 1,000 taxa tested and hundreds displayed in our gardens (largest testing of South African plants in temperate climate conditions)•Staff have been to South Africa 15 times in the last 30 years•16 of 113 Plant Select® introductions are South African (14%)
South Africa
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Drakensberg Mts.
Karroid Steppe
Fynbos Mts.
> 10,000 species
> 7000 species
CapeFloristicKingdom> 15,000 species
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Kazakhstan
Trips to Kazakhstan in 2009 and 2010
Funded by Plant Select® and DBG
2009 exploratory trip to assess floristic relevance
2010 collection driven
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KZ is home to the largest contiguous steppe region in the world
Multiple mountain ranges of varying ages and sizes
Isolated from oceanic influences
7th largest land mass country with 1,053,000 sq. mi.
Extends from N41̊ to N55 ̊and E44 ̊to E87̊
Kazakhstan
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Home to an estimated 6,000± sp.
Greatly under explored horticulturally
Much of the documentation was lost during 1991 independence
A few Russian floras still exist
650 collections made in 2010
Still germinating seed and planting trials around the state
Kazakhstan
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Argentina
Patagonia is one of 4 major steppe regions worldwide.
Andes are the longest mountain range in the world
Patagonian steppe flora and Andean alpines are poorly represented in horticulture
Argentina is the 8th largest country in the world.
Why Argentina?
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Research and relationship building began in 2008.
Formal permitting process started in Feb 2010 1992 Convention
on Biological Diversity Benefit sharing
Initial research and relationship building trip in Jan/Feb 2011 Drove 4,600 miles
around Patagonia 50 waypoints taken almost 8,000
photos documenting the landscape, conditions, flora and fauna.
Argentina
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Colorado Climate – Gardening Challenges
Semi-aridLow humidityLow precipitation :
10 – 12 inchesFluctuating
temperaturesShort growing
season (mid-May – mid-Sept)
Periodic drought cycle
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Plant TrialsSuperior
performanceSuperior
adaptationUniquenessLong seasonNon-invasivenessResistance to
pestsLow water
performanceMass producedPotential for
superior selection
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Thank You!Happy Spring!