






🌱 Feed your plants like a pro, watch them thrive like never before!
Jack's Classic 15-30-15 Houseplant Special is a water-soluble powder fertilizer designed to promote vigorous growth and increase blooms in houseplants. Featuring a balanced nutrient profile with added micronutrients, it supports strong roots and lush foliage. The included measuring spoon ensures precise application, while its versatile formula allows for foliar or root feeding. Trusted by thousands with a 4.7-star rating, this 8oz concentrate delivers efficient, long-lasting nutrition for thriving indoor plants.

| Best Sellers Rank | #15,841 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #580 in Garden Fertilizers |
| Brand | Jack's Classic |
| Customer Reviews | 4.7 out of 5 stars 778 Reviews |
| Global Trade Identification Number | 00671341515081 |
| Item Form | Powder |
| Item Weight | 8 Ounces |
| Liquid Volume | 0.24 Liters |
| Specific Uses For Product | Houseplant Care, Foliar Feeding, Root Feeding, Plant Growth, Flowering Plant Support |
A**R
Very healthy plant food
I’ve been using this houseplant fertilizer for a couple of months now and my plants look amazing. I really like this food and respond very well.
J**S
Great fertilizer!
I have been using a blue fertilizer for many years and then I couldn't find it anymore. I don't think this is the same brand but it works just as well. I put about a quarter of a teaspoon in my water and water with the fertilizer every other watering. My plants are beautiful! It also comes with a little measuring cup and chart which is very useful. So glad I found this!!!
Z**.
Best houseplant boost
I’ve been using this product for years, my houseplants love it!
C**E
Jack’s keeps my plants happy and growing
I’ve tried other fertilizers for my houseplants in the past but always come back to Jack’s. In the summer I use it every watering indoors and every other for the ones that sit outside for the summer. I use 2 gal jugs and cans and add one tablespoon each. I pull back to once a month or so in the cold months. You get a ton and it goes a long way. Great value. My plants grow so much with Jack’s. Sometimes I run out and don’t rush to replenish. I am always surprised when I start back using it and see the difference. I don’t usually have issues with burns, but I am as careful as I can be to avoid getting it on the leaves, especially if they’re in sunlight while watering.
W**S
Good product
Great fertilizer for houseplants. I keep 2 gallon jugs ready and use every time I water.
H**E
Seems to
So this item I believe is a bit hard to write a review for simply because, how do u know it would go without using this , SO I am comparing past summers with my outdoor baskets. I can say that I use this every time I water my indoor and outdoor plants this past summer. I can say that so far we have had a hotter than normal summer BUT my baskets seem to be thriving. This stuff DOES smell pretty strong in the container lol forewarned but I suppose that’s to be expected with any fertilizer that should be working!
D**Y
Love Jack's fertilizers
I used to use Peter's plant foods so now I use Jack's (one in the same). I have had excellent response from them, especially the bloom food. I use several products and highly recommend them all.
D**H
Pretty
Great plant food
Trustpilot
1 month ago
2 weeks ago