First, examine your Grevillea plant carefully to identify signs of distress. Look for yellowing or browning leaves, wilting, leaf drop, or stunted growth. Check the soil moisture—overwatering or underwatering are common culprits. Inspect the roots for rot (dark, mushy roots) or pests like aphids or scale. Understanding the problem is the first step to revival.
Grevilleas are drought-tolerant but can suffer from improper watering. If the soil is soggy, reduce watering and improve drainage by adding sand or perlite. If the soil is dry and cracked, water deeply but infrequently, allowing the top layer to dry between sessions. Avoid overhead watering to prevent fungal diseases, which Grevilleas dislike.
Grevilleas thrive in well-draining, slightly acidic to neutral soil (pH 5.5–6.5). If the soil is compacted or clay-heavy, amend it with organic matter like compost or pine bark. Avoid phosphorus-rich fertilizers, as Grevilleas are sensitive to high phosphorus levels, which can cause toxicity and leaf burn.
Remove dead or diseased branches to redirect energy to healthy growth. Use sterilized pruning tools to prevent spreading infections. Lightly trim back leggy stems to encourage bushier growth. Avoid heavy pruning during extreme heat or cold, as Grevilleas recover best in mild conditions.
Yellowing leaves may indicate nitrogen deficiency. Apply a low-phosphorus, slow-release fertilizer formulated for native plants. Alternatively, use a seaweed extract or fish emulsion for gentle nutrient boosts. Always follow dosage instructions to avoid over-fertilizing, which can harm the plant.
Grevilleas prefer full sun but may struggle in extreme heat. Provide afternoon shade in scorching climates. Shield the plant from strong winds, which can dehydrate foliage. Mulch the base with organic mulch (e.g., wood chips) to retain moisture and regulate soil temperature, but keep mulch away from the stem to prevent rot.
If pests are present, spray the plant with a mild soap solution or neem oil. For fungal issues like root rot, reduce watering and apply a fungicide if necessary. Improve air circulation around the plant to discourage mold and mildew. Regularly inspect leaves and stems for early signs of infestation.
After implementing changes, observe the plant’s response over weeks. New growth is a positive sign. If problems persist, reassess soil pH, light exposure, or watering habits. Grevilleas are resilient but may take time to recover. Patience and consistent care are key to revival.
