Pros

  • Highly effective for encouraging large, healthy houseplants with dramatic growth
  • Suitable for a variety of houseplants, including snake plants and parachute plants
  • Easy to use and consistently produces impressive results
  • Adds significant volume and fullness to indoor plants, sometimes transforming them into bushes
  • Supports rapid root growth and vibrant blooms and vegetables in both indoor and outdoor gardening
  • Helps accentuate natural colors and shapes of plants, enhancing their overall appearance
  • Available in a large size, suitable for frequent use
  • Encourages healthy root and tuber development, leading to larger tubers and blooms
  • Recommended by many users as an essential product for indoor and outdoor plants
  • Suitable for difficulo-grow plants like orchids and Ukrainian Violets

Cons

  • The product no longer produces its iconic deep blue color, now appearing as an extremely pale green
  • Several users report that it seems ineffective this year, with results comparable to watering with plain water
  • Customer service responses have been unhelpful, with no replies despite multiple attempts to contact
  • Repeated purchases have led to disappointment due to inconsistent quality and change in formula
  • The color change causes emotional disappointment due to nostalgia and personal preference
  • Difficulty finding the original formula and color through major retailers, with the issue persisting across different sellers
  • The change in appearance may cause skepticism about its effectiveness, even if it still works for many

Bottom Line

We think this product remains a popular choice for encouraging healthy, prolific plants and flowers, but be aware that recent changes in its formula and color might raise doubts about its consistency. If you value a consistent, proven blue fertilizer, you might want to consider other highly-rated options or look into similar products that haven't changed their formulation. For many users, the effectiveness still appears to be there, despite the visual shift.

Lowest at any Popular Retailer
$22.98 at Amazon
How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 69 retailers to give you the short version.

Where to Buy

Prices last updated: April 20th 2026 7:16 pm
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