---
product_id: 7802070
title: "15-30-15 Houseplant Special Water-Soluble Fertilizer, 8oz | Powdered, Targeted Micronutrient Package, Promotes Green-up and Increased Blooms, Transplant Solution, Root & Foliar Feeding"
brand: "jack's classic"
price: "€ 47.71"
currency: EUR
in_stock: true
category: "Jack's Classic"
url: https://www.desertcart.hr/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-8oz-powdered
store_origin: HR
region: Croatia
---

# 15-30-15 NPK for lush growth Water-soluble powder for max absorption Included measuring spoon for precision 15-30-15 Houseplant Special Water-Soluble Fertilizer, 8oz | Powdered, Targeted Micronutrient Package, Promotes Green-up and Increased Blooms, Transplant Solution, Root & Foliar Feeding

**Brand:** jack's classic
**Price:** € 47.71
**Availability:** ✅ In Stock

## Summary

> 🌸 Feed your green space like a pro—bloom bigger, grow stronger!

## Quick Answers

- **What is this?** 15-30-15 Houseplant Special Water-Soluble Fertilizer, 8oz | Powdered, Targeted Micronutrient Package, Promotes Green-up and Increased Blooms, Transplant Solution, Root & Foliar Feeding by jack's classic
- **How much does it cost?** € 47.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-8oz-powdered)

## 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

- • **Precision Dosing:** Comes with a handy measuring spoon to ensure the perfect mix every time, eliminating guesswork and waste.
- • **Concentrated Power:** Water-soluble powder stretches your investment further, mixing easily to nourish multiple gallons of plants.
- • **Micronutrient Boost:** Enhanced with essential micronutrients for stronger roots and healthier, more resilient plants—no extra feeding needed.
- • **Vibrant Growth Formula:** Boost your houseplants with a balanced 15-30-15 nutrient blend designed to maximize green foliage and flower blooms.
- • **Dual Feeding Flexibility:** Apply as a foliar spray or root feed—perfect for any plant care routine and continuous feeding systems.

## Overview

Jack's Classic 15-30-15 Houseplant Special is a water-soluble fertilizer powder enriched with micronutrients, designed to promote vigorous green growth and abundant blooms in houseplants. Its versatile application methods and included measuring spoon make precise feeding effortless, while its gradual nutrient release supports up to 4 months of healthy plant development without risk of burning.

## 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.

## Features

- 15-30-15 Analysis - Great for keeping houseplants vigorous and green and increasing the quality and quantity of blooms in flowering plants.
- Many Ways to Feed - Houseplant Special can be used as a foliar or root feeding product. Great for spraying directly onto leaves, roots, or when used in a continuous feed system.
- Water-Soluble Powder – Powdered concentrates go further than liquid fertilizers. Simply mix your measured powder with water and you are ready to feed with multiple gallons of liquid fertilizer!
- Included Measuring Spoon – All Jack’s Classic fertilizers come with a convenient spoon to create the right amount of liquid fertilizer for your plants.
- Micronutrients - Added micronutrients supply your plant with the nutrition it needs for optimal growth and health. Unlike other fertilizers, additional feeding is not required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KSMQM0M |
| Best Sellers Rank | #36,259 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #946 in Garden Fertilizers |
| Brand Name | Jack's Classic |
| Coverage | Medium |
| Customer Reviews | 4.7 4.7 out of 5 stars (796) |
| Global Trade Identification Number | 00671341515081 |
| Included Components | only product |
| Item Form | Powder |
| Item Weight | 8 Ounces |
| Liquid Volume | 0.24 Liters |
| Manufacturer | JR Peters |
| Mixing Ratio | 1 teaspoon per gallon of water |
| Model Number | 51508 |
| Number of Items | 1 |
| Part Number | 51508 |
| Specific Uses For Product | Houseplant Care, Foliar Feeding, Root Feeding, Plant Growth, Flowering Plant Support |
| Target Species | Plant |
| UPC | 671341515081 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Jack's Classic
- **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

## Images

![15-30-15 Houseplant Special Water-Soluble Fertilizer, 8oz | Powdered, Targeted Micronutrient Package, Promotes Green-up and Increased Blooms, Transplant Solution, Root & Foliar Feeding - Image 1](https://m.media-amazon.com/images/I/71j1fvHZ3kL.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👍🏻

## 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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**Shop now:** [https://www.desertcart.hr/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-8oz-powdered](https://www.desertcart.hr/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-8oz-powdered)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-04*