Are Coffee Grounds Good for Lemon Trees? - Yarden (2024)

/ Gardening, Growing Citrus Trees

Are Coffee Grounds Good for Lemon Trees? - Yarden (1)

If you’re a big coffee drinker, you’re probably used to throwing out your coffee grounds after you use them. However, consider putting those coffee grounds to use by turning them into fertilizer for your plants. Keep your used coffee grounds from ending up as trash and use them to help grow healthy and strong plants, most notably lemon trees.

Whether you already have or are looking for dwarf lemon trees for sale, a dwarf meyer lemon tree for sale, or any lemon tree to help spruce up your backyard, they’re the perfect receptacle for putting your used, fully composted coffee grounds. Check out this amazing way to turn your coffee grounds from trash to a helpful fertilizer that will allow your lemon tree to flourish into one of the best lemon trees possible!

Using Coffee Grounds for Your Lemon Tree

Most coffee drinkers are probably familiar with the powdery substance left behind after brewing coffee. While you may be used to just throwing them in the trash, you can use coffee grounds for something better than making your garbage smell like day-old coffee.

You can use this highly nutritious organic material to help feed your lemon tree. As coffee grounds are high in nitrogen and other nutrients that allow for your plants to prosper, they are a surefire way to help keep up the health of your lemon tree. Instead of wasting money on fertilizer, use the coffee grounds you already have.

Benefits of Coffee Grounds for Your Plants

Using coffee grounds for your plants, specifically your lemon tree, offers a host of benefits when it comes to maintaining plant health. The high nutrients of the coffee grounds provide a cheaper alternative to traditional fertilizer while, at the same time, cutting down on the time it would take one to buy and transport fertilizer. Some perks of using coffee grounds on your lemon tree include:

  • The calcium in coffee grounds allows the lemon tree to build strong cell walls, leading to a strong branch structure.
  • The high dose of nitrogen in the coffee ground accelerates the growth of the tree’s root system giving the tree healthy foliage.
  • The trace amount of caffeine still found in the grounds is a repellent for snails, slugs, and deer.

How to Use Coffee Grounds as Fertilizer

It’s important to ensure your coffee grounds are composted before placing them on your lemon tree as a fertilizer. That being said, if you decide to place the coffee grounds on directly, only do so in small doses. However, having the coffee grounds composted is best.

When it comes to small lemon trees, you only want to place about a one-inch layer around the tree’s base, making sure not to let the coffee grounds touch the trunk. More mature trees can handle up to a three-inch layer of ground coffee. Immediately water the coffee grounds once placing them by the tree to dilute the caffeine and help the roots absorb the calcium and nitrogen in the coffee grounds.

Doing this throughout the spring season will help your lemon tree grow. You can do this every four to six weeks during the growing season and cut back during the fall and winter months. Since lemon trees are evergreen and fruit-bearing trees, you must regularly feed them and have rich soil to ensure growth at a normal rate and maintain healthy foliage no matter the lemon tree climate.

How to Prepare Your Coffee Grounds

You must prepare your coffee grounds before placing them on your lemon tree to reduce the chemicals in them. Though, in small amounts, placing the grounds straight to your plant is fine, it is better to be safe than sorry.

You can start preparing them by storing the coffee grounds in a jar or container. Let them cool first before doing so. Ensure the lid isn’t on tightly or has holes so moisture doesn’t stay trapped in the container and create mold.

You should also mix your coffee grounds with brown material so as not to place them directly on your plant. It’s a good idea to mix them with the compost you already have. Brown material in your compost consists of leaves, straw, hay, or bark chips. Coffee grounds are a green material, so it’s important to mix them with brown material first. A good ratio of ⅔ brown material and ⅓ green material will do.

Though you may not want to wait, it’s good to let the material decompose for at least six months. You may be sad you can’t start using your coffee grounds as fertilizer immediately, but it will all be worth it. Letting them break down allows them time to mix with the brown material and lose any otherwise harmful chemicals.

Are Coffee Grounds Safe for Your Lemon Tree?

Coffee grounds are safe for lemon trees once they’ve decomposed and lost their chemicals. Too many coffee grounds on a lemon tree before this process happens may cause the death of the good bacteria in the soil and other microorganisms needed for proper tree growth. While this may not be a problem in small amounts, waiting for the decomposition process to run its course is best.

Try out Coffee Grounds on Your Lemon Trees!

Coffee grounds as fertilizer can provide an effective and cheaper alternative for your lemon trees than a traditional fertilizer. If you’re an avid coffee drinker with a green thumb, this is the perfect way to raise healthy and lasting lemon trees. Whether it be a bearss lemon tree, co*cktail lemon tree, or dwarf eureka lemon tree, this technique will surely help your trees flourish.

While half a year can seem like a long time to wait for your coffee grounds to be ready to be placed on your lemon tree, it will be well worth it. If you get started today, in six months, you will have the perfect fertilizer to help your lemon tree grow and flourish. So, don’t wait another day and start composting your coffee grounds now so that you’ll have the perfect fertilizer by next spring.

Are Coffee Grounds Good for Lemon Trees? - Yarden (2024)

FAQs

Are Coffee Grounds Good for Lemon Trees? - Yarden? ›

Using Coffee Grounds for Your Lemon Tree

Can you put coffee grounds around a lemon tree? ›

Citrus trees, such as oranges, lemons, and limes, thrive in slightly acidic soil. Coffee grounds have a mild acidic nature, making them an ideal amendment to help balance the pH levels around your citrus trees.

What are the disadvantages of coffee grounds as fertilizer? ›

Some plants do not benefit from adding coffee grounds to their soil. Plants like lilacs and lavender prefer alkaline soil, so the slight acidity may harm them. The caffeine in coffee grounds can also harm some herbs and geraniums.

Do you put coffee grounds on top of soil? ›

Add composted coffee grounds directly to your garden soil in your garden by raking them into the top couple inches of soil or simply sprinkling the grounds on top.

What plants should you not put coffee grounds around? ›

In most cases, the grounds are too acidic to be used directly on soil, even for acid-loving plants like blueberries, azaleas and hollies. Coffee grounds inhibit the growth of some plants, including geranium, asparagus fern, Chinese mustard and Italian ryegrass.

What is the best fertilizer for a lemon tree? ›

Use Ammonium Sulfate, Ammonium Phosphate or Citrus Food fertilizer. The amount of fertilizer needed per year depends on the age, the size, and the type of tree. For example, a medium-sized adult tree 5-6 years after planting needs 6.2 pounds of Ammonium Sulfate per year (split into three applications).

Can I just sprinkle coffee grounds on plants? ›

Reusing used coffee grounds is a fun, free way to fertilizer your houseplants, however, it most likely will not provide your plants with all the nutrients they need. You can add additional nutrients by using a premade houseplant fertilizer or repotting your plant with fresh potting mix.

Do citrus trees like coffee grounds? ›

I'm applying it around a citrus tree to help add nutrients & green up the leaves. Please use organic non flavored coffee.

Can too much coffee grounds hurt plants? ›

Excess coffee grounds, if applied to the soil before composting, have multiple effects on the soil system. In addition to microorganisms tying up nitrogen temporarily, the caffeine residues in the spent coffee grounds can suppress germination and slow the growth of some plants.

Is it better to put coffee grounds in the garden wet or dry? ›

Cover the soil around the plant's trunk with well-dried coffee grounds and water abundantly. Each watering will release nitrogen from the coffee grits and penetrate into the soil with water, soaking the plant's root system, thereby strengthening it and protecting it from pests.

Which plants love coffee grounds? ›

Acid-loving plants like azaleas, blueberries, and roses benefit greatly from coffee grounds, as they help to increase the acidity of the soil. Other plants such as tomatoes, carrots, and radishes also benefit from the slow-release nutrients in coffee grounds.

What bugs hate coffee grounds? ›

Repel insects and pests:Coffee grounds contain compounds that are toxic to many insects. You can use your coffee grounds to repel mosquitos, fruit flies, beetles and other pests. To use coffee grounds as an insect and pest repellent, simply set out bowls of grounds or sprinkle them around outdoor seating areas.

What fruit trees like coffee grounds? ›

Fruit and vegetable plants like blueberries, peppers and cucumbers and flowers like peace lilies and azaleas love coffee!

How often should you put coffee grounds around your plants? ›

A good rule of thumb is to feed and water your plants once a week with a weak coffee solution. They'll appreciate the additional nutrients, as well as the water. And while we're here, let's talk for a minute about those leftover coffee grounds as well.

Which trees like coffee grounds? ›

Still, adding used coffee grounds to your growing medium can make a difference with acid-loving plants. Top among these are African violets, blueberries, azaleas, jade plants and hydrangeas.

What trees do well with coffee grounds? ›

Coffee grounds are neutral to slightly acidic (pH can range from about 6.2 to 6.8), with fresh grounds containing more acid, which can affect soil pH. Acidic-loving plants such as azaleas, blueberries, hydrangeas, rhododendrons, and roses will benefit from a sprinkling of coffee grounds around the base of plants.

How do I make my lemon tree soil more acidic? ›

The best remedy for lemon tree problems like chlorosis is to improve the pH of the soil. You can acidify overly-alkaline soils by applying a solution of ¼ -½ cup of white vinegar in 2 gallons of water, planting citrus fruits cut in half face-down in the soil or using a commercial soil acidifier.

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