Rockwool cubes are a great way to start growing tomatoes from seed. They are made from spun basalt rock and are sterile, pH neutral, and provide excellent drainage and aeration for the roots of the tomato plants. Rockwool cubes are also lightweight and easy to handle, making them a great choice for beginner gardeners.

To begin, you will need to purchase rockwool cubes, tomato seeds, and a container to hold the cubes. You can find rockwool cubes at most garden centers or online. Once you have the cubes, you will need to soak them in water for about 15 minutes. This will help to soften the cubes and make them easier to work with.

Once the cubes are soaked, you can begin planting your tomato seeds. Place one seed in each cube and gently press it down into the cube. Make sure the seed is completely covered by the cube. You can then place the cubes in the container and fill it with water. The water should be at least an inch above the cubes.

Once the cubes are in the container, you can place the container in a warm, sunny location. The temperature should be between 65 and 75 degrees Fahrenheit. You should also make sure the container is in a location that gets at least six hours of direct sunlight each day.

Once the seeds have sprouted, you can begin to transplant them into larger containers. When transplanting, make sure to handle the cubes carefully and not to damage the roots. You can also add a small amount of fertilizer to the soil to help the plants grow.

Once the plants are established, you can begin to water them regularly. Make sure to water the plants deeply, but not too often. Too much water can cause the roots to rot. You should also make sure to fertilize the plants every two weeks.

Tomatoes grown in rockwool cubes can be harvested when the fruits are ripe. Make sure to pick the tomatoes when they are fully ripe and not before. This will ensure that the tomatoes have the best flavor and texture.

Rockwool cubes are a great way to start growing tomatoes from seed. They are lightweight, easy to handle, and provide excellent drainage and aeration for the roots of the tomato plants. With a little bit of care and attention, you can have a successful tomato crop in no time.