A Green Party "Save the Bees" roadshow will wing its way through Northland to promote a proposed ban of bee-killing chemicals in public parks.
Green MP Steffan Browning will speak in four Northland centres about the need to get glyphosate-based herbicides such as Roundup out of parks.
"There are many toxic effects and yet glyphosate is still used in streets, schools and parks where our children play," Mr Browning said.
Bee populations had been hit hard by a variety of threats including varroa mite and neonicotinoid poisons, he said.
"Neonicotinoids should be taken off our shelves and out of our environment to help bee populations recover."