---
product_id: 469900556
title: "JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce"
brand: "jack's classic"
price: "KSh803"
currency: KES
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.ke/products/469900556-jr-peters-j-r-peters-inc-jacks-51508-classic-15
store_origin: KE
region: Kenya
---

# 4 months slow-release nutrients Free precise measuring spoon Enhanced micronutrient blend JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce

**Brand:** jack's classic
**Price:** KSh803
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Feed your green tribe with confidence and watch them thrive!

## Quick Answers

- **What is this?** JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce by jack's classic
- **How much does it cost?** KSh803 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/469900556-jr-peters-j-r-peters-inc-jacks-51508-classic-15)

## Best For

- jack's classic enthusiasts

## Why This Product

- Trusted jack's classic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Burn-Safe Formula:** Highest safety factor ensures your plants thrive without risk of fertilizer burn.
- • **Precision Feeding:** Includes a free measuring spoon for exact dosing—no guesswork, just perfect care every time.
- • **Micronutrient Magic:** Packed with an advanced micronutrient formula to boost strong roots and lush green foliage.
- • **Trusted by Plant Pros:** 4.7-star rated by hundreds of plant lovers who swear by its consistent, stunning results.
- • **Sustained Growth Powerhouse:** Feeds your plants gradually for up to 4 months of vibrant, unstoppable growth.

## Overview

JR Peters Jack's Classic 15-30-15 Houseplant Special Fertilizer is an 8-ounce, slow-release formula designed to nourish houseplants for up to 4 months. It features an enhanced micronutrient blend for strong roots and vibrant foliage, includes a free measuring spoon for precise application, and offers the highest safety factor to prevent burning when used as directed.

## Description

Product description Releases nutrients gradually for up to 4 months of vigorous growth. Blended with an enhanced micronutrient package which provides optimal nutrition for strong roots and green foliage. Features the highest safety factor to prevent burning when applied as directed. Free measuring spoon enclosed for easy and precise application. Directions Apply as directed for safe and effective use.

Review: 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.
Review: 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!!!

## Features

- Free measuring spoon enclosed for easy and precise application
- Features the highest safety factor to prevent burning when applied as directed
- Blended with an enhanced micronutrient package which provides optimal nutrition for strong roots and green foliage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KSMQM0M |
| Brand | Jack's Classic |
| Customer Reviews | 4.7 4.7 out of 5 stars (741) |
| Date First Available | 15 Sept. 2014 |
| Item Weight | 226 g |
| Material | Plastic-7 |
| Model Number | 51508 |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 226.8 g |

## Product Details

- **Brand:** Jack's Classic
- **Item form:** Powder
- **Item weight:** 8 Ounces
- **Liquid volume:** 0.24 Litres
- **Specific uses for product:** Houseplants

## Images

![JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce - Image 1](https://m.media-amazon.com/images/I/41ssVByQsPL.jpg)
![JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce - Image 2](https://m.media-amazon.com/images/I/51-3TdGmnVL.jpg)
![JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce - Image 3](https://m.media-amazon.com/images/I/51-Lx1hzKkL.jpg)
![JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce - Image 4](https://m.media-amazon.com/images/I/51Xp-QdTStL.jpg)
![JR Peters J R Peters Inc Jacks 51508 Classic 15-30-15 Houseplant Special Fertilizer, 8-Ounce - Image 5](https://m.media-amazon.com/images/I/51tQGUujWGL.jpg)

## Questions & Answers

**Q: Can this be used on outdoor plants?**
A: Yes it can but it depends on the needs of your plants. They also have a blossom booster and all purpose formula that I use outside.

**Q: What’s the difference between “all purpose” and “special”?**
A: I would think that all purpose applies to all.
And special meaning that it contains superb ingredients

**Q: Is there any differences between this jr peters houseplant special 15-30-15 and jr peters all-purpose 20-20-20?**
A: 15-30-15 is double the amount of phosphorus. It’s best to check on each plant to find out what fertilizer is suitable.

**Q: Should this be refrigerated when storing in a very humid environment?**
A: I keep mine under kitchen sink and we love in Florida👍🏻

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 12 December 2025*

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.

### ⭐⭐⭐⭐⭐ Review
*by J***S on 2 October 2025*

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!!!

### ⭐⭐⭐⭐⭐ Review
*by W***S on 13 November 2025*

Great fertilizer for houseplants. I keep 2 gallon jugs ready and use every time I water.

## Frequently Bought Together

- Jack's Classic 15-30-15 Houseplant Special Water-Soluble Fertilizer with Micronutrients to Green-Up and Increase Blooms in Houseplants, 8oz
- Jack's Classic 10-30-20 Blossom Booster Water-Soluble Fertilizer with Micronutrients for Increasing Color and Quantity of Blooms in Flowering Plants, 1.5lbs
- Jack's Classic 30-10-10 Orchid Special Water-Soluble Fertilizer with Micronutrients and Extra Nitrogen, Used for Turfs and Ornamental Grasses, 8oz

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-14*