SKU: 86451223866
15-30-15 fertilizer for plants

15-30-15 fertilizer for plants Jack's® Nutrients 7-15-30 Finish Fertilizer – Greenhouse Megastore

Sale price$20.36 Regular price$22.62
Save 10%

Pay in installments of $5.66 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 22 - Sep 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

15-30-15 fertilizer for plants Jack's® Nutrients 7-15-30 Finish Fertilizer – Greenhouse MegastoreJack's 7 15 30 Finish Fertilizer is a specialized formula designed to support robust flowering, fruiting, and overall plant health, allowing growers to achieve optimal results during the final stages of their crop cycle. With a carefully balanced composition, this nutrient blend offers a low nitrogen content, high phosphorus content, and an abundance of potassium. Nitrogen By emphasizing a low nitrogen content, Finish ensures that plants receive

Jack's® 7-15-30 Finish Fertilizer is a specialized formula designed to support robust flowering, fruiting, and overall plant health, allowing growers to achieve optimal results during the final stages of their crop cycle. With a carefully balanced composition, this nutrient blend offers a low nitrogen content, high phosphorus content, and an abundance of potassium.

Nitrogen
By emphasizing a low nitrogen content, Finish ensures that plants receive minimal amounts of this nutrient. While nitrogen is essential for vegetative growth, excessive nitrogen during the later stages can negatively impact flowering and fruiting. By reducing nitrogen levels, this formula allows plants to shift their energy towards the production of robust blooms and bountiful fruits.

Phosphorus
The high phosphorus content in Finish plays a vital role in supporting flowering and fruit development. Phosphorus is crucial for promoting strong root growth, enhancing nutrient uptake, and stimulating flower formation. By providing ample phosphorus, this formula helps plants develop healthy and vibrant flowers, resulting in improved yields and overall crop quality.

Potassium
A significant amount of potassium, also known as potash, is essential for various plant functions, including the regulation of water uptake, enzyme activation, and overall plant vigor. By providing plants with an abundant supply of potassium, this formula helps them maintain optimal hydration, nutrient balance, and overall resilience throughout the final stages of their growth cycle.

Note: The amount of dye used in Jack’s Nutrients formulas has recently been reduced to nearly zero. As a result, products that were previously bright blue may now appear white or tan. This color change is normal—no other changes have been made to the fertilizer formula or its performance.

Benefits of Jack's® 7-15-30 Finish FeED

  • Specifically formulated for plants in their final stages of growth.
  • Low nitrogen content prevents excessive vegetative growth.
  • High phosphorus content promotes strong root growth and flower formation.
  • Abundant potassium supply for optimal hydration and nutrient balance.
  • Supports robust flowering, fruiting, and overall plant health.
  • Helps plants finish strong and achieve optimal results.
  • Tailored nutrient blend for a successful crop cycle.

Physical and Chemical Properties:

Physical State: Solid
Appearance: Crystals
Color: Light Blue
Odor: Slightly yeasty
Solubility: Highly soluble in water
Relative Density: 55-75 lbs/ft3

Guaranteed Analysis:

Total Nitrogen (N) 7.0%
3.0% Ammoniacal Nitrogen
4.0% Nitrate Nitrogen
Available Phosphate (P₂0) 15.0%
Soluble Potash (K₂0) 30.0%
Magnesium (Mg) 2.0%
2.00% Water Soluble Magnesium (Mg)
Sulfur (S) 9.7%
9.70% Combined Sulfur (S)
Boron (B) 0.2%
Copper (Cu) 0.05%
0.05% Chelated Copper (Cu)
Iron (Fe) 0.07%
0.07% Chelated Iron (Fe)
Manganese (Mn) 0.05%
0.05% Chelated manganese (Mn)
Molybdenum (Mo) 0.002%
Zinc (Zn) 0.05%
0.05% chelated zinc (Zn)

Derived from: Potassium nitrate, monopotassium phosphate, ammonium sulfate, potassium sulfate, magnesium sulfate, iron DTPA, iron EDTA, manganese EDTA, zinc EDTA, copper EDTA, boric acid, ammonium molybdate.
Potential Acidity: 228 lbs. of calcium carbonate equivalent (CCE) per ton.

WARNING: This product contains Molybdenum (Mo) and may be harmful to ruminant animals foraging on crops where applications have been made.

Note: It's important to follow the manufacturer's instructions and guidelines for proper application and dosage based on the specific needs of your plants.


Additional Information

Safety Data Sheet (PDF)
Nutrient Decision Tree (PDF)
Nutrient Schedule for Pure & Simple (PDF)
Nutrient Schedule for City Limits (PDF)
Nutrient Schedule for Jack's 3-2-1 (PDF)
Nutrient Schedule for Outdoor Production (PDF)
Nutrient Schedule for Fruiting Crops (PDF)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86451223866

Discover Niche Categories That Outsell 15-30-15 fertilizer for plants

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 8 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
R
Verified Purchase
Roger
West Palm Beach, US
★★★★★ 4
Nice warmer.
Color: Black
This thing gets hot! I've had one incident with it. It was on without anything showing on the LED panel. Went to move it and got an unpleasant surprise... Sorry, but one star off for that. Other than this incident it works just fine. Keeps my mug of whatever warm or hot as I select. Recommend it. I'm sure the incident I suffered was a fluke.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
V
Verified Purchase
Vanessa Grossman
Charlottesville, US
★★★★★ 5
Daily Must-Have for Working at Home!
Color: Black
The KitchekShop Coffee Warmer is an item I use daily. I had an old warmer that had a switch on it and the light burnt out. I would always forget to turn it off and sometimes it would be on overnight while I slept or when I left my home office. Yikes! Fire hazard, right?! So I purchased this one and I love it. You can see a little review I made. This has a display to show the temperature setting on it while it's on. It has a power button, a timer button for up to 12 hours, and a temperature button. The timer is awesome because I can set it anywhere between 1-12 hours to automatically shut off and not worry about it. I usually set it for the time I KNOW I will be leaving my office so I can't forget about it. I also love the 4 temperature settings. I typically keep it at the second setting of 145 F which is the perfect temp for me. Sometimes, if I am bringing on a beverage that already started to cool a bit, I will bring the temp up to 167 F or 185 F to get it warmer faster, then set it back at 145 F. And once in awhile, if I only have a little bit of beverage left, I will be it at the lowest temp of 131 F so that it's not scalding hot when I drink it. It doesn't take up a lot of space and it's best used with mugs that have a flat bottom. If you have a concave bottom mug, the heat doesn't distribut as evenly on the mug and it won't heat as quickly and evenly. This is no fault of the product, it's science. I will say that I had an issue with the first warmer I purchased. It was not heating up as it should. Customer service was phenomenal and sent me a replacement and the replacement has been perfect. Even if this one goes out, I would continue replacing it because of the functionality, appearance, and quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
H
Verified Purchase
Helen H.
Phoenix, US
★★★★★ 5
LOVE IT!! No more lukewarm coffee!!
Color: Black
I have a glass coffee mug with a slight ridge on the bottom so I wasn't sure if this would work with my mug. It did wonderfully! I found that the lower temp. is too low for how hot I like my coffee, but the next one was a bit too high, HOWEVER, it was drinkable I just have to blow on it a little. But, even if I forget, it's NOT TOO hot to where it hurts. It's VERY easy to use, and I'm old, hahaha
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
V
Verified Purchase
Virgie Sarabia
Houston, US
★★★★★ 5
Keeps my coffee to temperature
Color: Black
it works great at keeping your hot drinks hot, unfortunately you have to remember to turn off once you are needing to step away or leave for the day as it will not turn off on its own until about 8 hours later, drying the coffee or drink and leaving a dry paste in bottom of cup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
D
Verified Purchase
Daihaumui
Phoenix, US
★★★★★ 5
it keeps my tea hot for as long as I want it
Color: Black
I really like the cute design of this mug warmer. I bought two so my husband and I can use them at the same time. My larger mugs fit perfectly on it. The four temperature settings, timer, and auto shut-off feature are all very useful. Now I can take my time and truly enjoy my tea.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

recommand products