How to Propagate Hydrangeas from Cuttings in Australia

Propagating hydrangeas from cuttings is one of the easiest ways to create new plants. The key is choosing the right type of cutting at the right time of year.

Softwood cuttings: Taken in late spring to early summer from young, flexible growth. Best for fast rooting.
Semi-hardwood cuttings: Taken mid to late summer when stems firm up. More resilient to transplanting.
Hardwood cuttings: Taken in late autumn to winter. Slower to root but reliable long-term.

In Australia, softwood cuttings are most common because they root quickly in warm conditions. Timing matters—cuttings taken too early may wilt, while late-season cuttings may not establish before winter.

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Step-by-Step Propagation

Follow these simple steps to grow hydrangeas successfully from cuttings:

Choose a healthy stem with no flowers. Cut a 10–15 cm section just below a leaf node.
Remove the bottom leaves, leaving only the top two or three pairs.
Dip the cut end into rooting hormone (optional but improves success).
Plant the cutting into a pot filled with moist, well-draining propagation mix.
Firm the soil around the stem and water gently.
Cover with a clear plastic bag or place in a propagator to maintain humidity.
Keep in bright, indirect light—avoid harsh sun while roots form.

Roots usually appear in 3–6 weeks. Once new leaves emerge, cuttings can be hardened off outdoors before transplanting into the garden or larger pots.

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Aftercare, Fertiliser & FAQ

First feed: Once roots are established, use a diluted liquid fertiliser such as CompleteGrow NPK 20-20-20 every 2–3 weeks.
Transplant care: Harden cuttings gradually before moving them outside to prevent shock.
Moisture: Keep soil consistently damp but never waterlogged.
Sunlight: Provide morning sun and afternoon shade for young plants.

FAQ

Q: What’s the best time to take hydrangea cuttings in Australia?
A: Late spring to early summer for softwood cuttings, as they root fastest in warm weather.
Q: Do I need rooting hormone?
A: It’s optional, but it increases success rates and speeds up rooting.
Q: When should I fertilise new hydrangea cuttings?
A: Wait until cuttings develop roots and new leaves, then start with a diluted CompleteGrow liquid feed.
Q: How long before cuttings flower?
A: With good care, propagated hydrangeas may flower within 2–3 years depending on variety.

Final Recommendation: Start hydrangea cuttings in spring for the best success, then support their growth with CompleteGrow NPK 20-20-20 to establish strong roots and healthy new plants.