---
product_id: 71254470
title: "Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb)"
brand: "jonathan green"
price: "₩87389"
currency: KRW
in_stock: true
reviews_count: 5
url: https://www.desertcart.kr/products/71254470-jonathan-green-10321-black-beauty-ultra-grass-seed-cool-season
store_origin: KR
region: South Korea
---

# Germination in 7-14 days Covers 600 sq. ft. Roots up to 4 ft. deep Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb)

**Brand:** jonathan green
**Price:** ₩87389
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate Your Lawn Game with Black Beauty!

## Quick Answers

- **What is this?** Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) by jonathan green
- **How much does it cost?** ₩87389 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/71254470-jonathan-green-10321-black-beauty-ultra-grass-seed-cool-season)

## Best For

- jonathan green enthusiasts

## Why This Product

- Trusted jonathan green brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Moisture Master:** Retains moisture with deep roots and a waxy leaf coating.
- • **Versatile Growth:** Thrives in full sun to partial shade, perfect for various landscapes.
- • **Generous Coverage:** One bag seeds up to 1,200 sq. ft. for overseeding, ensuring complete coverage.
- • **Transform Your Lawn:** Establishes new yards and fills in bare spots effortlessly.
- • **Vibrant Green Aesthetic:** Produces a lush, dark-green lawn that enhances curb appeal.

## Overview

Jonathan Green's Black Beauty Ultra Grass Seed is a premium cool-season lawn seed that establishes new yards and fills in bare spots quickly. With a blend of tall fescues, Kentucky bluegrass, and perennial ryegrass, it produces a dense, dark-green lawn while retaining moisture with deep roots. Ideal for outdoor use, this 3 lb bag covers up to 600 sq. ft. for new lawns and up to 1,200 sq. ft. for overseeding, making it a must-have for any lawn enthusiast.

## Description

Full description not available

## Features

- ESTABLISHES NEW YARDS & FILLS IN BARE SPOTS - Black Beauty Ultra Grass Seed quickly germinates for the fast establishment of newly seeded lawns. It also rapidly fills in bare spots to invigorate thin or damaged lawns.
- PROVIDES A DARK GREEN LAWN - This grass seed mix produces healthy, dense, and attractive turf with a dark-green color. Grass types included are tall fescues, Kentucky bluegrass, and perennial ryegrass.
- RETAINS MOISTURE - With roots that can grow up to 4-feet deep and a waxy leaf coating, Black Beauty Ultra preserves moisture and limits evaporation. It also withstands heavy traffic.
- IDEAL GROWING CONDITIONS - Our grass seed mix requires full sun to partial shade. The best time to apply is mid-August to mid-October while the ground is still warm and the nights are cooler. The next best time to plant is mid-March through mid-May.
- COMPLETE COVERAGE - This 3 lb bag will seed up to 600 sq. ft. for new lawns. For overseeding, this bag will seed up to 1,200 sq. ft. The germination time is 7 - 14 days.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Expected Blooming Period | Spring to Fall |
| Sunlight Exposure | Full Sun |
| Indoor Outdoor Usage | Outdoor |
| Additional Features | Grows in 14-21 days |
| Unit Count | 48.0 Ounce |
| Number of Pieces | 1 |
| Item Weight | 3 Pounds |
| Color | Green |

## Product Details

- **Indoor/Outdoor Usage:** Outdoor
- **Brand:** Jonathan Green
- **Color:** Green
- **Special Feature:** Grows in 14-21 days
- **Expected Blooming Period:** Spring to Fall
- **Item Weight:** 3 Pounds
- **Sunlight Exposure:** Full Sun
- **Unit Count:** 48.0 Ounce
- **Number of Pieces:** 1
- **Number of Items:** 1

## Images

![Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) - Image 1](https://m.media-amazon.com/images/I/61LpOda1LUL.jpg)
![Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) - Image 2](https://m.media-amazon.com/images/I/61MRD++-gHL.jpg)
![Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) - Image 3](https://m.media-amazon.com/images/I/81eIy0lH8EL.jpg)
![Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) - Image 4](https://m.media-amazon.com/images/I/81tq3xXH4IL.jpg)
![Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb) - Image 5](https://m.media-amazon.com/images/I/81RZr6EgLZL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: I can't seem to find a chart describing the mixture of the various grass seeds in Black Beauty Ultra Mix and their percentages.**
A: Jonathan Green Black Beauty Ultra Grass Seed MixtureLot:  BBU-10-2; Seeding rate:  5.0 lb per 1000 ft2% by weight Cultivar/Species 29.70% ‘Dakota’ Tall Fescue 29.65% ‘Taos’ Tall Fescue 19.75% ‘Tombstone’ Tall Fescue 9.85% ‘Blue-tastic’ Kentucky Bluegrass 9.83% ‘Frontier’ Perennial Ryegrass .

**Q: Is it good for Denver, Colorado area?**
A: It is. TTTF with Bluegrass. Stays green with 1- 1 1/2 inches a week.  I’m in 80015 Great cool season grass

**Q: can the black beauty seed be put down over an existing lawn?**
A: As I mentioned in a previous review of this product the product didn't germinate(grow) in two attempts to overseed an existing lawn under ideal conditions.  I even took some seed and placed it in a seedling tray and it didn't germinate either.  I attempted to reach out to the company twice prior to posting the negative review to provide them with an opportunity for a response/explanation and never received a response.

**Q: Would this grass be good in Missouri**
A: I have no reason to believe why it should not grow there.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's all in the prep work
*by P***L on June 8, 2024*

I never have good luck with growing anything in my yard, so I wasn’t sure how this would turn out. Things that I plant usually don't grow well, if at all. But this product was a home run. It makes me look like a lawncare professional. I started by using a scarifier to remove all the weeds and moss from my neglected lawn, then applied a 3-inch layer of topsoil before planting Jonathan Green Black Beauty Ultra Grass Seed. Honestly, I couldn't be happier with the results!Disclaimer: the right prep work + frequent watering is essential to bring out the best this grass seed can offer. If you don't plan to invest the time to do those things, don't bother buying this high quality, expensive grass seed (or any grass seed at all for that matter). Check out Youtube videos for instructions for the prep. I followed the Silver Cymbal Youtube channel's guidance and that worked great. A couple years ago, I bought this same grass seed and spread it across my yard with no prep or watering/maintenance, and that just didn't work at all.First Impressions:The packaging was solid, and the seeds looked high-quality. The instructions were clear and easy to follow, which was a great start.Planting Process:I spread the seeds using a broadcast spreader. The seeds have this special coating that helps them absorb water and nutrients better. Within a couple weeks, I started seeing little green shoots, and by the second week, my lawn was looking fuller and greener. I planted the grass seed in early April, which was a bit too early for my location, but it still turned out great. Applying peat moss on top was key to retaining moisture for the seeds to germinate. Peat moss is expensive but totally worth it. It's like a wet carpet after you water it.Lush, Deep Green Color:The standout feature? The lush, deep green color of the grass. It looks like a thick, green carpet, and the uniform consistency is incredible. The grass blades are fine-textured and dense, making my lawn look like a professionally maintained golf course. The thick consistency of the grass keeps weeds out without me having to do much of anything in terms of weed treatment or removal. I did spray mesotrione + surfactant when i planted the seed, which I believe was crucial to prevent weeds while the grass seed was germinating and growing.Drought and Disease Resistance:This grass is tough! Despite some dry spells, it stayed vibrant and healthy with less frequent watering. I haven't seen any signs of common lawn diseases either, which is a huge plus.Easy Maintenance:Maintaining my new lawn is a breeze. The grass grows evenly, so I don’t have to mow or edge constantly. It responds well to regular fertilization, and it’s stayed lush through different seasons.The downside:Now I have to mow my lawn more often, because the deep roots that these grass seeds have grown have caused the grass to grow faster than substandard grass seed might grow.Value for Money:Sure, it’s a bit pricier than some other brands, but it’s worth every penny. The transformation in my lawn’s appearance and health is amazing, and it’s super low-maintenance.Conclusion:Jonathan Green Black Beauty Ultra Grass Seed has completely transformed my lawn. The lush, deep green color and thick, uniform consistency make it look stunning. It’s easy to maintain and tough against drought and disease. Adding a layer of peat moss to retain moisture really helped it grow fast. Highly recommend this grass seed to anyone wanting a beautiful, hassle-free lawn. Five stars!Pro tip: save a bit of the grass seed in case you have bare spots that you need to fill in later.

### ⭐⭐⭐⭐⭐ started sprouting within 5 days
*by N***E on July 18, 2025*

This grass seed delivers great results—if you use it properly. My first attempt didn’t go as well as I hoped, but on the second try, I followed the correct process and the difference was huge. The grass started sprouting within 5 days and filled in nicely. The key is proper preparation: loosen the soil, cover the seeds with a good layer of quality topsoil, and water moderately every day. If you take the time to do it right, this product really works.

### ⭐⭐⭐⭐⭐ Awesome seed and no added nonsense
*by A***  on June 7, 2025*

Highly impressed with this seed. I planted it after just roughing up the soil and watered it, simple simon. No fertilizer, no special anything and it took off and grew pretty fast in my back yard. Back yard spots were shaded most of the day but it really took off. It is a bit slower in the sun I think but hard to tell for sure as I have really bad soil in my front yard so it did not grow as fast. I had to be patient and it is finally coming in after a few weeks. I really need to fix my soil and add some compost or something. I have also had success with pre-germinating the seed with soaking (see various videos) and just mixed it with some bagged soil and tossed it on the lawn and it did well. This will always be my go-to for grass seed with no added anything. Love this stuff!

## Frequently Bought Together

- Jonathan Green (10321) Black Beauty Ultra Grass Seed - Cool Season Lawn Seed (3 lb)
- Jonathan Green (16006) Veri-Green Starter Fertilizer for Seeding & Sodding - 12-18-8 Starter Lawn Fertilizer (1,500 Sq. Ft.)
- Jonathan Green (10600) Black Beauty Dense Shade Grass Seed - Cool Season Lawn Seed (3 lb)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-28*