Do you have any grandkids that you really want to teach gardening to? If that is the case, then you may use this opportunity to make it so. Although there may be a few ideas you have before you make that happen, you should start small and go from there, such as the following suggestions and ideas:
Make it exciting
You should do what you can to make the job exciting for the grandkids, as anything boring will quickly lose their attention and they will likely wander off, forcing you to abandon you planned activities or to force them upon them, which would defeat the purpose. Whatever you are planning on doing, you should try to make it as fun as you can imagine it. Giving it an air of competition will make things more interesting.
Ensure the correct tools are used
You should do whatever you can to prepare the grandkids for what is coming ahead. A large part of the process would be to make them understand what the right tools are for any challenge they need to handle ahead of them. Even though there are gardening tools we can use, there are smaller varieties for kids we can make use of as well. Make this step and see about them having fun but also knowing the more interesting details of gardening and landscaping. Teach the kids they need to wash and take care of their tools to keep them working after they are done gardening and they will learn responsibility in a friendly fashion.
Choose the right plants
You also need to make sure you choose plants that allow for easy growth as you move forward. You will want to do this as the kids will likely lack the patience for a very long term project. The kids will need help and you could use the chance to show the entire process of planting, irrigation, growth, harvest and more. Some great plants for the job would include squash, poppies, radishes, sunflowers, alyssum, beans, marigolds, pansies, tomatoes, peas and nasturtiums as well.
Help the little ones understand the processes
You should let the grandkids understand the entirety of the process of planting and gardening in general. You can work on most of the hard stuff, but in the end, it will be good for them to learn about tilling and adding nutrients to the soil, but only by combining it with your efforts and explanations so they can get used to it. You can use cardboard egg cartons to plant the seedlings, cutting them out with the cardboard to plant them later when they need transplanting. The cardboard will decay and help feed them as time goes by, allowing the grandkids to help with the task and to have fun doing it.
Include wildlife in your teachings
You need to help make the local wildlife part of the gardening experience. Work on adding a birdbath, squirrel feeders and so forth or help refill and maintain those and observe any animals in the area you can have fun with. This will help your grandkids understand the connections in nature and what they have to offer.