Polli:Nation is a UK-wide biodiversity project to which the HLF has given initial support of £1.3m, including a development grant of £26,000.
The project will engage 260 schools to help transform their grounds into pollinator-friendly habitats.
Data recording will monitor any changes in species diversity and numbers. A network of young enthusiasts will help by spreading knowledge and creating green ‘stepping stones’ such as bug hotels and bee houses to enable insects to move with ease between different areas.
HLF chief executive Carole Souter said: "Heritage has huge potential to excite and inspire and this funding will definitely deliver both in spades.
"It’s great news that HLF is able to support such a wide breadth of heritage projects, from protecting our vital insect life to transforming much-loved historic buildings and passing on heritage boatbuilding skills for future generations."