The current shortage of kava in the Vanuatu capital Port Vila has bumped up prices to VT 800 a kg.
The shortage has been linked to the recent severe drought which destroyed many kava plantations.
All kava market areas in the sub-residential areas have been witnessing people queuing up to get their share whenever an interisland vessel arrives in the capital from the outer islands in the hope of getting their shares.
Kava production is struggling to cope with increased demand around Vanuatu's islands.
More farmers in outer islands are selling directly to local bars rather than shipping to Port Vila on Efate where there is no kava production.
A scientist with the Ministry of Agriculture says farmers need to respond urgently before Vanuatu loses ground in its various export markets.
Dr Vincent Lebot has urged farmers to plant more, while advising that ongoing dry conditions entail technical constraints with planting kava cuttings.
Meanwhile, the country's leading Vanuatu expert warned that Vanuatu could lose some ground as a leading producer and exporter of kava if farmers aren't able to overcome the current challenges.
According to Dr Lebot, a prompt response is required because, as the wholesale price of kava rises, neighbouring Pacific countries may consider growing kava locally.