Startups are capitalising on renewed interest in environmental solutions after Australia's bushfires brought climate change to the front of investors' minds.

"We've got a problem in front of us. If we don't act, it will get worse. Where there's a problem, there's a market," co-founder of AirSeed Technologies Andrew Walker said.

Andrew Walker and Andries Louw flying drones in South Africa in tests for their AirSeed technologies tech.

Mr Walker and his South African-based co-founder Andries Louw have raised more than $180,000 over the past two days on their path to a million-dollar crowdfunding raise via the Onmarket platform for their drone-based seed-planting technology.

Having bootstrapped AirSeed to the tune of several hundred thousand dollars, the pair are now turning to the crowd for a capital boost ahead of expanding trials of their offer into the Australian market.