Mapping the spread of knapweed

Thanks to our dedicated members, partners, and volunteers, we are able to fight the spread of invasive plants in California.

Cal-IPC’s annual IRS Form 990 Filings are available as Adobe Acrobat (PDF) files. The Adobe Acrobat Reader is available as a free download here.

Cal-IPC annual IRS Form 990 filings:

2021 IRS Form 990

2020 IRS Form 990

2019 IRS Form 990

2018 IRS Form 990

2017 IRS Form 990

2016 IRS Form 990

2015 IRS Form 990

2014 IRS Form 990

2013 IRS Form 990

2012 IRS Form 990

2011 IRS Form 990

2010 IRS Form 990

2009 IRS Form 990

2008 IRS Form 990

2007 IRS Form 990

2006 IRS Form 990

2005 IRS Form 990

2004 IRS Form 990