Introducing the Original Vitamin Solution for Plants Mineral Supplement Landscapers 1 gal. This fertilizer is perfect for indoor and outdoor use with any compatible plant type. The vitamin formula ensures that your plants get the necessary nutrients they need to thrive. The SUPERthrive brand is known for its healthy products, and this fertilizer is no exception. this concentrate is easy to use and store. The fertilizer is not toxic and can be used anytime indoors or outdoors making it a great addition to your plant care routine. Made in the United States, this fertilizer is a must-have for landscapers and gardeners alike. New