---
product_id: 7802070
title: "15-30-15 Houseplant Special Water-Soluble Fertilizer with Micronutrients to Green-Up and Increase Blooms in Houseplants, 8oz"
brand: "jack's classic"
price: "$61"
currency: NZD
in_stock: true
reviews_count: 8
category: "Jack's Classic"
url: https://www.desertcart.nz/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-with-micronutrients
store_origin: NZ
region: New Zealand
---

# 15-30-15 NPK for lush growth Water-soluble powder for easy mixing Includes precise measuring spoon 15-30-15 Houseplant Special Water-Soluble Fertilizer with Micronutrients to Green-Up and Increase Blooms in Houseplants, 8oz

**Brand:** jack's classic
**Price:** $61
**Availability:** ✅ In Stock

## Summary

> 🌱 Feed your plants like a pro, watch them thrive like never before!

## Quick Answers

- **What is this?** 15-30-15 Houseplant Special Water-Soluble Fertilizer with Micronutrients to Green-Up and Increase Blooms in Houseplants, 8oz by jack's classic
- **How much does it cost?** $61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/7802070-15-30-15-houseplant-special-water-soluble-fertilizer-with-micronutrients)

## 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

- • **Micronutrient Boost:** Enhanced micronutrients ensure strong roots and vibrant foliage without extra supplements.
- • **Precision Application:** Free measuring spoon guarantees perfect dosing every time—no guesswork, just growth.
- • **Economical & Efficient:** Powdered concentrate stretches further than liquids—more feedings, less waste.
- • **Vibrant Growth Formula:** Balanced 15-30-15 nutrient ratio fuels lush green leaves and abundant blooms.
- • **Dual Feeding Flexibility:** Use as foliar spray or root feed to target your plant’s needs precisely.

## Overview

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.

## 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.

Review: 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.
Review: 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!!!

## 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 |
|---------------|-------|
| 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 |

## 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 with Micronutrients to Green-Up and Increase Blooms in Houseplants, 8oz - 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👍🏻

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very healthy plant food
*by A***R on December 12, 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.

### ⭐⭐⭐⭐⭐ Great fertilizer!
*by J***S on October 2, 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!!!

### ⭐⭐⭐⭐⭐ Best houseplant boost
*by Z***. on January 30, 2026*

I’ve been using this product for years, my houseplants love it!

## 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 New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-16*