Bangalore is known for its many fruit markets, and finding organic strawberries is relatively easy.
To get organic strawberries in Bangalore, you can find them in local supermarkets, or visit farmers' markets such which are near your place. There, you can buy from small-scale producers and get directly in touch with the people who planted and harvested your fruits.
You can also join CSA (community-supported agriculture) programs that allow you to become a member of organic farm cooperatives where you receive seasonal organic products according to your subscription.
Finally, there are online stores offering organic strawberries shipped to certain areas in Bangalore.