What is the Best Fertiliser for Succulents? (Australian Guide)

Succulents have surged in popularity over recent years and it seems that everyone is growing them. They make the perfect plant for pots and even growing indoors on a nice, sunny windowsill. And, they’re particularly easy to look after even for beginners.

You might be surprised to learn that succulents are not heavy feeders and don’t need a lot of fertilising.

In fact, if you use a slow-release product such as Hortico Plant Fertiliser, you only need to give your succulents a dose once a year in spring.

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I’ve only just recently started growing a few succulents in pots and my plants are thriving with just this one application once a year.

What you’ll also find is that if you repot your succulents into a fresh mix when they need it, they’ll get all the nutrients that they need from the specific cacti and succulent mix that you use.

Other fertilisers for succulents

If you visit your local nursery or a major retailer like Bunnings, you’ll find that there are a variety of different fertiliser brands that are specifically formulated for succulents. Here are a few to consider.

Osmocote Cacti & Succulent Controlled Release Fertiliser

This fertiliser is lower in nitrogen and has a good dose of potassium to encourage flowering in your succulents. It also includes trace elements to keep your plants happy and healthy. 

However, a single application will break down within 6 months, so you should apply this once in spring and then again in autumn.

Yates Thrive Plant Food Spikes for Cacti & Succulents

These spikes are an easy way to feed your succulents. All you have to do is carefully push a spike into the soil at the base of your plant. Do this gently so that you don’t damage any roots.

This means that the nutrients contained in the spikes are at the root level where they are easy for your plants to use when they’re needed. Each food spike will last for around 2 months. 

Therefore, you want to replace them during the warmer parts of the year every couple of months but don’t replace them in winter. Just wait until spring before you add a new spike.

Miracle Gro Succulent Plant Food

This is another very easy-to-use fertilizer for succulents. It comes in a pump pack, so all you need to do is add 1 to 2 pumps to the top of the soil and water. The number of pumps you need will depend on the size of the pot.

The product has just the right low amount of nutrients that your succulents need. Alternatively, you can mix the fertiliser with water in a watering can at the rate recommended on the pack.

Use Seasol As A General Plant Tonic

Seasol is a general plant tonic that promotes a strong root system and helps to strengthen plant cells. It’s made from liquid seaweed and is not actually a fertiliser as it contains minimal amounts of the major three nutrients.

The N:P:K breakdown of this product is 3.0:0.4:1.8. This is perfect for your succulents as these plants don’t require large doses of these major nutrients.

What the product lacks in major nutrients, it makes up for in trace elements such as calcium, iron, magnesium, and sulphur. This provides your succulents with the perfect solution to encourage lots of healthy growth.

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When should I start fertilising my succulents?

You only need to fertilise your succulents once a year in spring if you’re using a slow-release fertiliser. Never fertilise succulents in winter because this is generally their dormant time.

How often should succulents be watered?

Succulents should only be watered when the soil is dry and not on a regular schedule. Before watering your succulents, test the soil with your finger or a moisture meter. If it’s completely dry, you can water your plants. However, if the soil is still damp, test it again in a couple of days.

Is Seasol good for succulents?

Seasol is ideal for use on succulents as it’s a plant tonic rather than a fertiliser. It will promote excellent root growth and strengthen the cell walls of the plants.

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Annette Hird

Annette Hird is a gardening expert with many years of experience in a range of gardening related positions. She has an Associate Diploma of Applied Science in Horticulture and has worked in a variety of production nurseries, primarily as a propagator. She has also been responsible for a large homestead garden that included lawn care, fruit trees, roses and many other ornamental plants. More recently, Annette has concentrated on improving the garden landscape of the homes that she has lived in and focused a lot of energy on growing edible plants as well. She now enjoys sharing her experience and knowledge with others by writing articles about all facets of gardening and growing plants.


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