Error message

Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2244 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /mnt/www/html/mgrieblerdev/docroot/includes/database/database.inc).

Deprecated function: Return type of DatabaseCondition::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 1652 of /mnt/www/html/mgrieblerdev/docroot/includes/database/query.inc).

Deprecated function: Creation of dynamic property MergeQuery::$condition is deprecated in MergeQuery->__construct() (line 1344 of /mnt/www/html/mgrieblerdev/docroot/includes/database/query.inc).

Deprecated function: Creation of dynamic property DatabaseCondition::$stringVersion is deprecated in DatabaseCondition->compile() (line 1865 of /mnt/www/html/mgrieblerdev/docroot/includes/database/query.inc).

Arbnet News

A Time for Trees, A Time for Arboreta

By Gerard Donnelly

(Citation: Arnoldia, Spring 2022, arnoldia.arboretum.harvard.edu.)

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ArbNet accredits 500th arboretum

Read more about ArbNet accredits 500th arboretum

ArbNet: 10 years of fostering collaborations, furthering professionalism, and advancing the planting and conservation of trees through the global network of arboreta

Jessica B.

Read more about ArbNet: 10 years of fostering collaborations, furthering professionalism, and advancing the planting and conservation of trees through the global network of arboreta

New ‘Mini Poplar Gardens’ Pair Research and Outreach

In collaboration with ArbNet, Dr. Jill Hamilton, assistant professor at North Dakota State University, and colleagues at Virginia Tech, University of Vermont and University of Maryland have recruited 18 universities and arboreta nationwide to plant ‘mini’ common garden experiments of black cottonwood (Populus trichocarpa), balsam poplar (P. balsamifera), and their hybrids as part of a new garden-based research network, funded by the National Science Foundation (NSF) Plant Genome Research program.

Read more about New ‘Mini Poplar Gardens’ Pair Research and Outreach

ArbNet and BGCI Announce Reciprocal Accreditation Program

BGCI Botanic Garden Accreditation and ArbNet Arboretum Accreditation Announce Reciprocal Arrangement

ArbNet and Botanic Gardens Conservation International (BGCI) announced today an agreement to allow applicants to be considered for accreditation by both organizations through a single application.

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What's in an Arboretum?

By Sue Paist and Christopher Luley

Arborist News

What IS an Arboretum and Why You Need to Know

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Ideas for Design of Outdoor Spaces for Learning and for Play

College Planning & Managment - February 2018

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ArbNet Celebrates Five Years Fostering Connections and Collaborating with Arboreta Around the World

Read more about ArbNet Celebrates Five Years Fostering Connections and Collaborating with Arboreta Around the World

TACF and ArbNet:A GROWING PARTNERSHIP

Chestnut - The Journal for the American Chestnut Foundation - Spring 2016

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100 ARBORETA NOW ACCREDITED THROUGH ARBNET

LISLE, Illinois (Apr. 10, 2015) – ArbNet, the interactive community of arboreta, has accredited 100 arboreta through its Arboretum Accreditation Program, which is facilitated by The Morton Arboretum. Launched in 2011, the program offers the only accreditation in the world specific to arboreta.

Read more about 100 ARBORETA NOW ACCREDITED THROUGH ARBNET