The garden features a significant collection of wild-type begonias, which are utilized for research and breeding programs.
The onsite conservatory is designed to maintain a controlled micro-climate specifically to support high-humidity tropical species that would not survive Hiroshima's winter.
The garden serves as a site for the conservation and study of the 'Hibakujumoku' (A-bombed trees), specifically propagations of trees that survived the 1945 atomic blast.
The grounds include a dedicated area for 'plants of interest,' which features species used in traditional Japanese crafts and textiles.
A specialized rock garden section is maintained to showcase alpine flora that requires specific drainage and soil conditions.
The Hiroshima Botanical Garden houses over 230,000 plants representing approximately 10,000 species across a 18.3-hectare site in the Saeki Ward. Its centerpiece is a large, circular conservatory that features a central water lily pool and tiered tropical plant displays. The facility includes an extensive begonia collection, often cited as one of the most comprehensive in Japan. Visitors can explore various specialized sections, including a cactus greenhouse, a Japanese garden, and a camellia collection. The site is situated on a hill, providing elevated views over the surrounding residential areas and distant landscape. The institution focuses on both botanical research and public education through seasonal displays and rotating exhibitions. It maintains a dedicated propagation area for preserving endangered or rare flora native to the Chugoku region.
The interior of the main greenhouse looking out across the water lily collection.
Wear comfortable, sturdy walking shoes, as the park is built on a hillside with significant inclines.
Check the official website's blooming calendar before your visit to time your arrival with specific seasonal peak displays, such as cherry blossoms or hydrangeas.
Bring a portable fan or cooling supplies if visiting during the mid-summer peak heat.
Avoid visiting on a rainy day if you prioritize outdoor garden walks, as the site is primarily open-air; avoid relying on GPS for exact entrance navigation as the terrain can be complex.
Closed on Fridays (unless a national holiday falls on that day) and during the year-end/New Year holiday period.
Do not touch or pick plants; stay on marked gravel or paved paths; refrain from bringing outside food into the greenhouses.
