Superthrive Add to fertilizer for growth! Superthrive is a World Champion activator, reviver, transplanter and grower. Super Concentrated! 1 Tbsp. per 15 Gallons! Superthrive is great for everything green and can be used on indoor/outdoor plants, seedlings, bulbs, trees, lawns. Superthrive is NON-Pesticide, NON-Polluting – 50 biousables normal pure complexes.