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The 5 Best Fertilizers for Collard Greens

You want to find the best fertilizer to help your collard greens grow healthy and strong. Luckily, there are many products on the market that you can choose from. However, having so many fertilizer products also makes it hard to identify the fertilizer with the best nutrient profile and uses the best ingredients. I have done the hard work in finding the best fertilizer for your collard greens. Read on below to learn what makes a good fertilizer and the best products that can all be found online at great prices.

Let me cut to the chase – THE best fertilizer for collard greens is Nature’s Care Organic Blood Meal. There are plenty of other great fertilizers and I go into 4 other ones below but Nature Care’s fertilizer is by far the best…by far. It’s what I recommend.

Miracle-Gro Nature’s Care Organic Blood Meal

This fertilizer get’s Greenpinky’s top pick because of its quality ingredients, price, and proper N-P-K ratio

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Comparison Table: Best Fertilizers for Collard Greens

Here is a table of my picks for the best fertilizers for collard greens. Take a scroll through and use my more detailed product roundup below to help you make your decision. I have put these products in order of price ascending based on the time of my review.

Reviews: Best Fertilizers for Collard Greens

When it comes down to choosing the right fertilizer for collards, you need to look at a couple things. What is the N-P-K ratio found in the fertilizer? Does it use high quality ingredients? Are its ingredients organic? Does it have any forms of slow release nitrogen to allow continuous nutrients to your plant and also to minimize the risk of leaf burn? Below you will find reviews of the best products on the market.

  • N-P-K Ratio: 46-0-0

  • Fertilizer type: Granules

  • Amount: 5 lbs

Easy Peasy Urea Fertilizer is the perfect choice for collard greens. Its formula is specifically designed to encourage new growth in plants, including flowers and vegetables. It also encourages a deep green color in a plant’s leaves. The fertilizer is made up of urea nitrogen, which works quickly to encourage rapid growth. In addition, the contents of the fertilizer are safe to use, so gardeners can feel good about using this to nourish their plants. Collard greens treated with Easy Peasy Urea Fertilizer are often larger and healthier overall, and they tend to produce more foliage.

  • N-P-K Ratio: 12-0-0

  • Fertilizer type: Granules

  • Amount: 3 lbs

Miracle-Gro Nature’s Care Organic Blood Meal is a nitrogen based fertilizer that was created in order to nourish plants from the roots up. This fertilizer helps to raise soil quality and releases nutrients directly to plants’ roots. The slow release formula means the fertilizer continuously feeds and nourishes plants. When used beginning in the spring, gardeners will only need to apply the fertilizer every two months. Collard greens treated with this blood meal are often larger and healthier. Gardeners will be able to harvest fuller, greener collard greens after using this fertilizer.

  • N-P-K Ratio: 12-0-0

  • Fertilizer type: Granules

  • Amount: 3 lbs

The Organic Blood Meal Fertilizer from Burpee is an excellent choice for leafy greens, such as collard greens, as it promotes abundant growth and fuller plants. The blood meal fertilizer features a high nitrogen content. This helps to nourish the soil, promoting the release of nutrients. More importantly, plants that have high nitrogen levels in their leaves are better able to photosynthesize, so they grow more rapidly. They are also healthier, greener, and more lush. Harvests will be abundant when gardeners use this fertilizer on their collard greens. Best of all, however, is that aside from nourishing plants, this product also works well to keep deer away, which can save many plants.

  • N-P-K Ratio: 12-0-0

  • Fertilizer type: Granules

  • Amount: 5 lbs

For an excellent organic fertilizer, Down to Earth Blood Meal Fertilizer is a great choice. This fertilizer is high in nitrogen, which helps to nourish plants from the leaves down. The nitrogen helps to encourage growth, so it’s perfect for assisting in establishing new plants or stimulating growth in older plants. Because nitrogen is so essential for a plant’s leaves, this fertilizer promotes not only fuller foliage but also darker, richer color in that foliage. Collard greens treated with the fertilizer are often larger, greener, and have a delicious flavor.

  • N-P-K Ratio: 12-0-0

  • Fertilizer type: Granules

  • Amount: 17 lbs

Epsoma Blood Meal Fertilizer is designed to help plants grow. The formula encourages larger, fuller leaves, so gardeners who use this product can expect an abundant harvest. The fertilizer, which is made of organic materials, is rich in nitrogen, which is essential for strong leaves and, therefore, healthier plants overall. Not only is blood meal excellent for encouraging growth, however, but it also works well to discourage deer and other wild animals from entering gardens and eating plants.

Note the amount of fertilizer that you will be purchasing with this bag. It is 17 pounds of fertilizer. The price is high, but it makes sense once you look at the amount of fertilizer you are purchasing.

A Short Guide to Raising Collard Greens

Collard greens fall into the category of vegetable known as brassica. This category includes vegetables like mustard greens, kale, bok choi, broccoli and many others. Growing collard greens can be a great cost-saving and interesting hobby or it can be done on larger scales to sell at farmer’s markets. With the proper care, growing healthy, nutritious and tasty collard greens is easy.

Collard Greens Need Appropriate Fertilization

Collards need a moderate amount of nutrients and fertilization to grow well. Collards require fertilizers with high nitrogen content. When you are looking at a fertilizer’s product labeling you often will find the N-P-K ratio. The N stands for nitrogen, P stands for phosphorous, and K stands for potassium. If you don’t see a specific N-P-K ratio listed, you can look in the ingredients and just look for the percentage of the fertilizer that is nitrogen vs phosphorous vs potassium. Different plants have different requirements.

For collard greens, we recommend a fertilizer with a N-P-K ratio with very high levels of nitrogen. The N-P-K ratio may be 12-0-0 or 27-3-3, etc. The ratio does not have to be exact, but make sure the nitrogen levels by far supersede the phosphorous and potassium. The nitrogen is what allows the collard to develop dark green leaves.

Make sure to follow the instructions on the fertilizer that you buy in regards to how much fertilizer to apply. Do not over fertilize your collards as this can lead to as many issues as under fertilizing. Excessive nutrients can lead to diseases or “leaf burn”.

Plant in Full Sun

Collard greens will tolerate some shade, but they really thrive in full sun. They should receive about 5-7 hours of full sun per day. 

Watering Requirements

Using a drip system with soaker hoses or irrigation systems are the ideal way to water your collards. Deep water once per week is preferred over frequent shallow waterings.

Avoid Herbicides, But Remove Weeds

Weeds can cause havoc on just about any plant, but particularly collards because of their nutritional requirements. Weeds compete with your collards for nitrogen in the soil. We recommend that you manually remove any weeds. Do not add any herbicides or weed killers, as these will inadvertently affect your collards.

Length to Harvest

Most collards take about 55 to 75 days to mature to the point that they are ready to be harvested. We suggest that you cut the entire plant. If done at the appropriate time, the leftover crown often will sprout for another harvest. Try to harvest when they are dark green and before they reach a foot long. The later the time of harvest, the more likely the leaves will be fibrous and not as tasteful. 

Wrapping it up

I hope you use this guide and one of these great fertilizers to help you raise healthy collard greens. Remember that with water and fertilization, the most important thing is to apply just the right amount – not too much and not too little.

Happy Planting!

About the author: Carley Miller is a horticultural expert at TheGreenPinky. She previously owned a landscaping business for 25 years and worked at a local garden center for 10 years. Read More