How to get to sera kogen farm from hiroshima station?

Hi Carrie!

Here's how to go to How to get to sera kogen farm
Access to serakogen farm :
1.From Hiroshima Station, take the JR Tokaido/Sanyo Shinkansen (bullet train) to Shin-Onomichi Station (36 minutes). Sera Kogen Farm is accessible from Shin-Onomichi Station by taxi (50 minutes). Total travel time: approximately 1 hour and 26 minutes.
2.From Hiroshima Airport, Sera Kogen Farm is accessible by taxi (58 minutes). Total travel time: approximately 58 minutes.

Do keep in mind that taxis are fairly expensive in Japan and a 50 minutes drive may be costly. Maybe you could use this website to find out the price of the taxi:
https://www.taxifarefinder.com/main.php?city=Hiroshima-Japan

If you can drive by yourself that would be the best option, here's something that could be useful to you: 
What do I need to drive a car in Japan?
https://triplelights.com/blog/what-do-i-needdrivecarjap-2594

Also you could call Serakogen farm here:
Address :
1124-11 Oazabessako, Sera-cho, Sera-gun 729-3305
Phone :
+81-(0)847-24-0014

Here's more information on Sera Kogen Farm:
https://planetyze.com/en/japan/hiroshima/sera-kogen-farm
There's also a map on this page.

And you should keep in mind the admission prices as well:
Adults: 800 YEN
Child: 400 YEN
Child admission: 4 years to elementary school age