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Jack's Classic
Jack's Classic Blossom Booster Plant Food
Lowest at Amazon
$20.13 at AmazonLowest at any Popular Retailer
$19.63 at WalmartWhere to Buy
Prices last updated: May 25th 2026 9:40 pm
Pros
- •Highly effective for promoting flower and blossom production in a variety of plants, including flowering plants and fruit trees.
- •Quicissolving formula requires only 1 teaspoon per gallon of water, making it economical and easy to use.
- •Compatible with EZ Flo Fertilizer Injector, allowing for efficient application.
- •Proven effectiveness over many years with consistent positive results, promoting growth and blooming.
- •Works well for both indoor and outdoor plants, including specific success with Supertunias, African violets, and Christmas cacti.
- •Excellent for a wide range of plants, including veggies, trees, houseplants, and flower beds.
- •Can revive wilting plants and reduce transplant shock when used as a foliage spray.
- •Versatile for various growing conditions, shown by successful use on tomato plants and in selicking bucket systems.
- •Positive feedback from sharing samples, indicating effectiveness and satisfaction among other users.
- •Substantial lonerm use results in vibrant, healthy plants and noticeable improvements in garden appearance.
Cons
- •Contains some white particles mixed with the blue fertilizer that are not soluble, which could affect mixing.
- •Customer support was reportedly unresponsive to inquiries.
- •One reviewer strongly recommended avoiding the purchase, possibly due to issues faced with their specific experience.
- •Uncertain about lonerm effects for some users, though many plan to continue usage and potentially update reviews.
Bottom Line
Jack's Classic Blossom Booster 10-30-20 is a highly recommended plant food for anyone looking to enhance flower and plant growth. It is praised for its effectiveness across a wide range of plants, including annuals, perennials, and various indoor and outdoor varieties. Despite a couple of minor concerns with insoluble particles and customer service, its long-term users report consistent positive outcomes in plant health and blooming. If you're seeking a dependable and versatile fertilizer for vibrant plant life, this product is worth considering.
What Reviewers Are Saying
Praised
works great20%
economically priced10%
quickly dissolves20%
great results30%
easy to use20%
healthy plants30%
revive wilting plants10%
Criticized
not soluble10%
customer support issues10%
small package10%
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