A recommended Tortoise garden would include the following -
A Fully Grown Mushroom
(For great results use a Fully Grown Pink Cap Mushroom, unless you have not progressed that far, then use best available.
Alternatively, if you are able to, use a Supershroom as these often give even better results - please remember you may get Caterpillars though!)
4 x Ready For Harvest Fructus Randomus
(The rarer the fruit the better)
Percy Pineapple - Ultra Rare
Gordon Grape - Rare
Simon Strawberry - Rare
Oscar Orange - Common
Lucy Lime - Common
Bobby Banana - Common
Anna Apple - Common
2 x Low Tables of Organic Fruit or Veggies