How To Use Fireplace Ashes To Grow Great Tomatoes – Save Those Ashes For Next Year!

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Did you know that by simply saving back some of the ashes coming from your fireplace or wood stove this winter – you can use them next spring to help you grow bigger, better, and more productive tomato plants than ever? And that those ashes can do the same for your pepper plants too?

As it turns out, wood ashes can be extremely beneficial all over the vegetable garden. From helping to raise the pH level in overly acidic soils, to recharging tired soil with a multitude of nutrients and minerals.

One thing is for sure – ashes can be an incredible resource for gardeners. Especially when you consider they are free. But when it comes to growing the most popular plant of all in the vegetable garden – the beloved tomato, ashes are truly unbelievable in how they can help produce an amazing harvest!

fireplace ashes on tomato plants
Ashes contain large amounts of calcium and potash – which happen to be two nutrients tomato plants need to thrive.

How Ashes Help Tomato Plants

So why are ashes so incredible for tomato plants? For starters, when wood burns down, the nutrients left behind in the ash are some of the most important of all when it comes to growing healthy, strong, and highly productive tomato plants.

At the very top of the list of those nutrients is calcium. Calcium is crucial for tomato plants. Not only does it help young tomato plants develop healthy cells and wall structures for strong stems and branches, it also assists the plant in the successful germination of its blooms.

But as important as those are to a tomato plant’s growth, calcium is even more critical when it comes to a tomato plant forming healthy fruit.

Without enough calcium, tomato plants are highly prone to blossom end rot. Blossom end rot is a disorder that occurs when a tomato plant is calcium deficient. As the tomatoes form on the plant, the blossom end begins to rot. Ultimately, the fruit rots away before it can mature.

calcium loss - blossom end rot
Without enough calcium in the soil, tomatoes are prone to develop blossom end rot. Wood ashes in your planting hole can help prevent this.
Wood Ashes, Calcium, & Potash – How To Use Wood Ashes To Grow Great Tomatoes!

The good news is that wood ashes happen to contain a large amount of calcium. Nearly 20% of a pile of ashes is made up of calcium. Even better, those same ashes also contain a fair amount of potassium as well – which just happens to be another key nutrient tomatoes need.

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Potassium, or potash as it is often called, is used by tomato plants to help absorb water. And because a tomato consists of nearly 95% water – that can certainly be a huge key in developing larger, more plump, and juicy tomatoes on your plants.

Potassium also helps power photosynthesis, which helps tomato plants turn light into energy. The energy that then powers strong, healthy growth and more blooms. Wood ash also happens to contain magnesium, phosphorous and other trace nutrients that tomato plants love as well.

If all of that wasn’t enough reason to use wood ashes on your tomato plants, when mixed into the soil around plants, ashes also increase the soil’s ability to retain moisture. That means every time it rains or you water, the plants stay hydrated longer than ever.

Now that we know the benefits ashes can bring to tomato plants, let’s take a look at a simple two-pronged approach for how to best use them for great tomato plants.

How To Use Ashes To Grow Great Tomato Plants

The secret to success when using ashes to power tomato plants all comes down to knowing when to apply ashes to the soil and plants – and in what quantity.

Just as with fertilizer and water, too much of a good thing can be harmful to plants. If too little ash is used, your tomato plants can’t get the critical nutrients they need. And if too much is applied, it can change the soil’s pH and negatively affect growth.

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So when and how much wood ash should you apply to your plants? There are two great ways to use ash on your plants, and you can do both easily and quickly on planting day. Here is a look at exactly how to do both!

How To Use Ashes When Planting – How To Use Ashes To Grow Great Tomato Plants

One of the most important times to use ashes on your tomato plants is on planting day. Putting ashes directly into your planting holes can give young transplants a big dose of the nutrients they need most early on.

Putting ashes into every planting hole can give young tomato plants the nutrients they need quickly.

For best results, start by digging your tomato planting hole deep. The deeper you plant your tomatoes the better. This will allow roots to develop all along the stem, providing a strong anchor and the ability to absorb nutrients more quickly. A deep hole also allows you to add in plenty of wood ash as well.

For each plant, mix in about 1.5 cups of wood ash with the existing soil. This is also a great time to add in worm castings, coffee grounds, compost, and egg shells. Together, all of these natural ingredients will fill your planting hole with serious power.

Top Dressing With Ash – How To Use Ashes To Grow Great Tomato Plants

Once your transplant has been planted, lightly tamp the soil on the surface to set it in place. Now it’s time to add a bit more ash as a top dressing before you mulch your plants.

A top dressing of ash on the soil’s surface will allow even more of its nutrients to leach down into the soil every time it rains or you water. The ash on the soil surface will also help to hold that moisture in place longer as well.

To top dress, scatter about 1/2 cup of ashes lightly around the base of each plant. Finish by mulching your tomato plants as you normally would with straw, shredded leaves, or grass clippings. By putting the ash under the mulch, it will stay in place and do its job perfectly.

Fertilizing Your Tomato Plants – How To Use Ashes To Grow Great Tomato Plants

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