Topics

& 1987 storm 2018 3ATC 50th annual accreditation AFL AGM Agrilus Biguttatus aid air quality Alex Kirkley amenity Amenity Conference APPGHG apprentice apprenticeship Apprenticeships Approved Contractors ARB ARB Approved Contractor ARB Magazine ARB Show Arboriculture arborists Arbsafe ash dieback Assessments atf Australia award Barcham Trees Bartlett Tree Experts bats beyond ism biodiversity biosecurity Brexit bs5837 business Call for papers CEnv chainsaw chalara Charles charter Charter for Trees chelsea Chelsea Flower Show Claus Mattheck climate climber climbing competiton conference Confor conifers conservation Consultant consultation Council Countryside Stewardship cross industry news Cryphonectria parasitica Cumbria DART death defra Design Devon disease document dothistroma EAC ecology economy Ecotricity education Electricity England EPF Europe European Arboricultural Council exeter Exhibitors Fera flood flooding Forest Research forestry Forestry Commission forests FSC Fund4Trees funding fundraiser gardening government Green Brexit guidance guides Health Help Horse Chestnut horticulture HRH HRH Prince Charles HS2 HSE ICF Irma ISA iso i-Tree Kew land-based Landscape Institute landscaping Lantra law Leaf Minor London LTOA Melbourne mentor NASA National Geographic National Tree Week News nominations notification NTIS NTOA oak Oak-boring Beetle obituary Observatree opm Padua parks parliament Perennial petition Phytophthora planning planting Plumpton College policy poll Prince Charles Prince of Wales Protect and Survive protection ramorum Registered Registered Consultant Report research response review RFS rhs rogue tree surgeons Safety Scotland Scottish Branch SDG Accord security seminars Share Sheffield Show SocEnv soils staff statement statutory strategy student survey Sweet Chestnut sweet chestnut blight TDAG Technical Officers tender The Arboricultural Association The Woodland Trust TPO Trading Standards trailblazer training transport Tree Tree Council tree loss tree management Tree Officer tree species Tree Surgeons Tree Week tree-felling trees Trees, People and the Built Environment trust' TrustMark UAG Uitlity UK favourite ukas UKWAS urban forest Urban Tree Cover urban trees VETcert veteran trees video Videos volunteer VTA website woodland woodland trust woods young arborists

Disclaimer: The views and opinions expressed in this article are those of the author and do not necessarily reflect the views of the Arboricultural Association.

Share this story

Plant Allergy Expert Changes Course to hear Henrik Sjöman’s Barcham Seminar

  02/11/2017
Last Updated:  02/11/2017

Just a week after California-based plant allergy expert Tom Ogren led a seminar on the subject at Barcham Trees' nursery, he was back at the Ely, Cambridgeshire, venue in late October, having altered his UK itinerary to listen to and exchange views with renowned Swedish tree researcher Henrik Sjöman.

Accompanying Ogren was Nigel Clarke of Queux Allergy-Friendly Plants, whose Guernsey nursery (ww.allergyfriendlyplants.co.uk) offers plants with ratings on the Ogren Plant Allergy Scale (OPALS®) to enable purchasers to make informed choices based on their allergen potential. Both men are trustees of the not-for-profit organisation Safe Gardening (safegardening.org).

Henrik Sjöman, Tom Ogren and Nigel Clarke were welcomed to the event by Jaime Bray, vice chairman of the Arboricultural Association, and Barcham's Keith Sacre. More than 30 delegates heard tree-hunter Sjöman discuss his travels in China, central and eastern Europe and North America as part of his quest for rare and unusual species which may have the potential to become alternative choices as urban trees in Scandinavia.

Tom Ogren commented:

"It was well worth making a detour to listen to Henrik. We are both heavily involved in tree selection and it was stimulating to hear about his perspective and the criteria he uses in the selection process".