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June 1, 2026 – New Shipping Procedures

Effective June 1, 2026, all U.S. National Plant Germplasm System (NPGS) recipients are required to pay the shipping charges of their germplasm requests by providing a prepaid label or waybill. For more details, please refer to our Frequently Asked Questions.

News

Effective Jan. 1, 2025, the U.S. National Plant Germplasm System will modify its SMTA acceptance policy to distinguish between propagative and non-propagative germplasm. [Read More]

The U.S. Department of Agriculture (USDA) released today the National Strategic Germplasm and Cultivar Collection Assessment and Utilization Plan in support of the Agricultural Research Service (ARS) U.S. National Plant Germplasm System’s (NPGS) mission [Read More]

International distributions are covered by the International Treaty on Plant Genetic Resources for Food and Agriculture and could be covered by the Standard Material Transfer Agreement (SMTA). [Read More]

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	ACCESSION	PLANT NAME	TAXONOMY	ORIGIN	GENEBANK	AVAILABILITY	RECEIVED	SOURCE TYPE	SOURCE DATE	COLLECTION SITE	HABITAT	IMPROVEMENT LEVEL	NARRATIVE
0	PI 123096	No. 2392	Melissa officinalis L.	Trabzon, Turkey		Historic	1937	COLLECTED	08/12/1936	16km east of Trabzon				1834718	PI 123096
1	PI 73488		Melissa officinalis L.	Iran		Historic	1927	COLLECTED						1728557	PI 73488
2	NA 78507	NA 78507	Melissa officinalis L.	Azerbaijan	NA	Not Available	2008	COLLECTED	09/22/2008	Aliabad Forest Farm	Orchard understory			1952494	NA 78507
3	NA 73735	'Lime Balm'	Melissa officinalis L.		NA	Not Available	2004					Cultivar	Full name as recorded at U.S. National Arboretum: Melissa officinalis 'Lime Balm'.	2149800	NA 73735
4	W6 20656	W6 20656	Melissa officinalis L.	Basilicata, Italy	W6	Not Available	1998	DONATED	04/1998			Cultivated material	Climate: Eu-Mediterranean. 750 m above sea level. Use: aromatic. Perennial.	1559192	W6 20656
5	NA 46919	NA 46919	Melissa officinalis L.		NA	Not Available	1980					Cultivated material	Full name as recorded at U.S. National Arboretum: Melissa officinalis.	2145315	NA 46919

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June 1, 2026 – New Shipping Procedures

News

SMTA Acceptance Policy

USDA Introduces a Multi-Year Plan to Strengthen U.S. Genebank Management of Plant GermplasmInternational Distributions

International Distributions

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