Can you label the parts of a plant? Do you know what photosynthesis is? What do you know about the Irish famine? There are lots of interesting activities and worksheets here - and the great news is that they're short and colourful so it's easy to have a look at a different one each day and build your knowledge! Maybe you can make a smoothie with the fruits you grow, or maybe you have a recipe you would like to share with us? There are also activities to help you build your own wormery, or mini greenhouse.
If all of that doesn't appeal to you, maybe you could decorate some rocks for your garden!