Oh, Pittosporum glabratum! If you’re looking for a wonderfully lush and reliable shrub with those delightful little, fragrant flowers, you’ve picked a winner. I’ve spent countless hours with these tough beauties in my garden, and I can tell you, coaxing a new plant from an old friend is one of the most satisfying gardening joys. Pittosporum glabratum, in my experience, is a pretty forgiving plant to propagate, even if you’re just starting out. It’s a fantastic way to fill out your landscape or share the joy with fellow plant lovers.
The Best Time to Start
For Pittosporum glabratum, I’ve found that the late spring to early summer is your golden window. This is when the plant is actively growing and has plenty of fresh, semi-hardwood developing. It’s not quite soft and floppy like a brand-new shoot, but not woody and mature either. This sweet spot makes cuttings much more likely to root.
Supplies You’ll Need
Gathering your supplies before you begin makes the whole process so much smoother. Here’s what I typically have on hand:
- Sharp bypass pruners or a clean, sharp knife: For making clean cuts.
- Rooting hormone (powder or gel): This is your secret weapon for encouraging root development.
- A well-draining potting mix: I love a blend of perlite, peat moss, and a bit of compost. You can also buy specific “seed starting” or “cutting” mixes.
- Small pots or trays: Clean ones are essential to prevent disease.
- Plastic bags or a propagator: To create a humid environment.
- A spray bottle: For misting.
- Labels and a marker: To keep track of what you’ve planted!
Propagation Methods
My go-to method for Pittosporum glabratum is stem cuttings. It’s straightforward and yields great results.
- Take Your Cuttings: On a mild day (avoid scorching sun), select a healthy, non-flowering branch. Use your clean pruners to cut a section about 4-6 inches long. Make the cut just below a leaf node (where a leaf attaches to the stem).
- Prepare the Cuttings: Gently remove the lower leaves from the cutting, leaving just the top few. This prevents them from rotting when buried.
- Apply Rooting Hormone: Dip the cut end of the stem into your rooting hormone, tapping off any excess. Be sure to coat the end where you will make the cut.
- Pot Them Up: Fill your clean pots with your prepared potting mix. Make a hole in the center with your finger or a pencil and carefully insert the cutting, firming the soil around it.
- Create Humidity: Water the soil thoroughly until it drains from the bottom. Then, place the potted cuttings in a plastic bag or cover them with a propagator lid. This traps moisture and keeps the leaves from drying out.
The “Secret Sauce” (Pro Tips)
Here are a couple of things I’ve learned over the years that can really give your cuttings a boost:
- Don’t let the leaves touch the water/soil if you’re experimenting with water propagation. While I prefer soil for Pittosporum, for other plants, I find that submerged leaves invariably lead to rot. Keep them high and dry!
- Bottom heat is your friend! If you have a heat mat designed for plants, placing your propagation tray on it can significantly speed up root formation. It mimics the warmth of spring soil and encourages those roots to get growing. It’s not strictly necessary for P. glabratum, but it’s a clever trick.
Aftercare & Troubleshooting
Once your cuttings are potted up, keep them in a bright spot out of direct, harsh sunlight. Mist the leaves occasionally if they look a little stressed, and check the soil moisture regularly, keeping it consistently moist but not waterlogged.
You’ll know your cuttings are rooting when you see new leaf growth or give them a gentle tug and feel resistance. This can take anywhere from 4 to 8 weeks, or even a bit longer. Be patient!
The most common problem you might encounter is rot, which usually happens if the soil is too wet or there’s not enough air circulation. If you see a cutting turning black and mushy, unfortunately, it’s best to discard it to prevent the rot from spreading. Make sure your pots have drainage holes!
A Encouraging Closing
Seeing those tiny roots emerge is such a thrill! Remember, gardening is a journey, and propagation is a wonderful way to learn and grow alongside your plants. Don’t be discouraged if not every cutting takes. Just keep trying, celebrate your successes, and enjoy the process of bringing new life into your garden. Happy propagating!
Resource:
https://identify.plantnet.org/k-world-flora/species/Pittosporum%20glabratum%20Lindl./data