Aquilaria Crassna & Aquilaria Hirta — The Specialists

While malaccensis may be the most famous Aquilaria species, two other species deserve special attention for the unique qualities they bring to the oud world: Aquilaria crassna and Aquilaria hirta. Aquilaria crassna is the species behind the legendary Cambodian and Thai ouds. It thrives in the lowland tropical forests of mainland Southeast Asia — Cambodia, Thailand, Laos, and parts of central Vietnam. Crassna agarwood is characterised by its exceptional sweetness. The resin produced by this species has a natural honey-like quality, with fruity and floral overtones that make it one of the most approachable and universally appealing oud profiles. Thailand has become the global leader in crassna cultivation. Thai plantations, particularly in the eastern provinces of Trat and Chanthaburi, have refined inoculation techniques that produce commercially viable agarwood in as little as 8 to 12 years. While plantation crassna differs from wild specimens, the best Thai plantation ouds offer genuine quality at accessible prices. Laos is following a similar path, with growing plantation operations producing promising results. Aquilaria hirta occupies a much smaller ecological niche. Found primarily in the forests of Borneo — particularly in Malaysian Sarawak and Brunei — hirta produces oils with a distinctive green, slightly mineral character. Some describe hirta oud as having an almost jade-like coolness, with clean woody notes and subtle herbal undertones that are unlike any other species. Hirta oud is exceptionally rare on the market. Wild populations are small and scattered, and cultivation efforts are limited compared to malaccensis or crassna. For collectors seeking something truly unusual and outside the mainstream oud profiles, hirta represents an extraordinary discovery. 💬 Discussion: Have you encountered hirta oud? How does Thai plantation crassna compare to wild Cambodian crassna in your experience?