JoesMum said:Fruit is not recommended for Hermanns, much as they love it. Their bodies cannot process the sugars and it is harmful to them. If you do feed fruit, it should be very occasional.
The best food for your tort is leafy green weeds which are full of vitamins, minerals and, most importantly, fibre. Kale is fine in moderation as part of a balanced diet. Cucumber is mostly water and can cause diarrhoea if too much is fed. Commercial tortoise food pellets (soaked) are fine too. Most people feed 2-3 times a week as part of a balanced diet.
You can check out which weeds, salads and vegetables make good food by looking them up on The Tortoise Table Plant Database