How to Fertilize Succulents for Healthy Growth

Succulents are hardy, low-maintenance plants that store water in their leaves and stems, thriving in dry conditions. While they can survive with minimal care, fertiliser is essential for optimal growth, vibrant colour, and flowering. In nutrient-poor soil or small pots, succulents eventually deplete available minerals, leading to slow growth and faded foliage.

Fertilising your succulents replenishes key nutrients like potassium for stem health, phosphorus for root strength, and trace minerals for leaf colour. While they don’t need as much feeding as leafy houseplants, a light, targeted fertilising schedule keeps them healthy and stress-free.

Some growers ask: “Can I use orchid fertiliser on succulents?” While diluted orchid fertiliser can be used in a pinch, succulents thrive best with a formula designed for cacti and succulents, as these have lower nitrogen and a more balanced nutrient profile to avoid soft, weak growth.

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The Right Way to Fertilize Succulents

Succulents respond best to diluted, low-nitrogen fertilisers applied sparingly during their active growing season (spring to early autumn). Follow this step-by-step method:

Choose the Right Fertiliser: Use a low-nitrogen formula like the CompleteGrow Cactus Succulent Plant Food Fertiliser Concentrate (2‑7‑7) for healthy roots and strong leaves.
Water Before Fertilising: Slightly moist soil helps nutrients absorb without burning roots. Avoid applying to bone-dry soil.
Dilute Correctly: Mix according to label instructions. Succulents prefer weak, consistent feeding rather than heavy doses.
Apply Evenly: Pour the diluted fertiliser around the base of the plant, not on the leaves, to prevent residue and potential rot.
Flush Occasionally: Every few months, water deeply to flush any built-up salts in the soil.

This method encourages steady growth, supports flowering, and maintains compact, vibrant succulents without overstimulating them.

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How Often to Fertilize Succulents and Avoid Common Mistakes

Fertilising succulents is all about moderation. Overfeeding can cause soft, stretched growth and even root damage, while underfeeding can slow growth and reduce colour intensity.

Follow this fertilising schedule:

Spring and Summer: Fertilise every 4–6 weeks during active growth.
Autumn: Reduce to every 6–8 weeks as growth slows.
Winter Dormancy: Do not fertilise; the plant is resting and won’t absorb nutrients effectively.

Extra tips for success:

Always use fast-draining soil to prevent root rot.
Pair fertilising with proper watering—allow the soil to dry completely between waterings.
Use low-nitrogen fertilisers to maintain compact growth and avoid weak, elongated stems.

With this routine, your succulents will stay compact, vibrant, and healthy year-round, rewarding you with striking foliage and occasional blooms.