Magical practitioners often align their practice with the lunar cycles and phases of the moon. It is quite common to use the new/dark moon for setting intentions for things that you want to manifest, grow, and add to your life, and to work full moon magic for things that you want to lessen in your life. The reason for this is simple. You want to use the growing moon to increase and the waning moon to decrease so it is quite logical for manifesting magic from the time of the dark moon to the full moon and to practice banishing work during the time from the full moon to the new moon.
But the solar cycles are also a prime opportunity to work magic- especially for magic that will take longer to manifest. Sometimes you can work magic in a month, but other times it takes seasons or years. When you know what you are trying to work in your life you can choose the correct astronomical cycle to work with.
The Winter Solstice is a time to work magic and set intentions for growth. We don’t think of Winter as being a season of growth. Instead, Winter is a time of death and dormancy. But seeds that are planted in Winter will grow in Spring. When we plant magical seeds at the Winter Solstice they use the quiet time and stillness to grow. The sun reaches it’s shortest height in the sky at the moment of the Winter Solstice. From that point on the sun is reborn and begins to grow higher in the sky each day until it reaches its zenith on the Summer Solstice.
Winter Solstice is the time to plant magical seeds. With good care and proper follow through on the intentions, the magic that you plant now will grow and bloom in Spring.