The most common type of zinnia flower is Zinnia elegans, although many different zinnia cultivars are available. They come in various colors, sizes, petal types, and more, giving these annual ...

The zinnia flowers were grown in the Veggie facility, a low-cost growth chamber that provides lighting and nutrient supply for plants on the ISS. Astronaut Scott Kelly shared a photograph of the ...

When the seedlings are about 3 inches tall, thin out the weakest seedlings so that the remaining plants are properly spaced for the type of zinnia you’re growing. This is a great time to add a ...