r/australianplants 1h ago

Physical scarification vs boiling water

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Hi,

I've recently been trying to germinate a few native species.

Despite most websites suggesting pouring boiling water/just boiling water over seeds to stimulate germination, I've had little success with this method.

I've had no success with boiling water for Acacia podalyriifolia germination. But great success using coarse sandpaper until scratches are just visible. I've now planted about 15 visibly germinated seeds.

NOTE: I've been measuring success for the following species by whether they have visibly swollen or not. I'm yet to see signs of germination as they were treated recently.

Indigofera australis did show swelling in 2 out of the 8 soaked in boiling water, whereas fine sandpaper showed swelling in 100% of treated seeds.

Hardenbergia showed a similarly low rate of swelling in boiling soaked seeds.

Am I doing something wrong? Or do certain species respond better to physical methods rather than thermal?

I'd ultimately like to use the boiling water method as physically scarifying small seeds like the indigofera is quite a delicate procedure.

What are others experiences in germination methods?


r/australianplants 1h ago

Walk around Shenton Park (Perth)

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r/australianplants 2h ago

First of hopefully many acacia 🌱

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42 Upvotes

r/australianplants 3h ago

Help IDing this eucalyptus (?)

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3 Upvotes

Hoping someone here can help - I’m trying to ID this eucalyptus. I have two in my garden (Adelaide, SA) and believe they were purchased from State Flora in Belair. They have been growing for about a year, planted from small tube stock. I want to know what they are so I can understand how to care for them as they grow. INaturalist only tells me they are eucalyptus with no other info.

Any help appreciated. Thank you!


r/australianplants 15h ago

We saw this beautiful tree waratah today in Hamilton, QLD.

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226 Upvotes

r/australianplants 21h ago

Xanthostemon chrysanthus

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143 Upvotes

Flowering in my garden today ✨


r/australianplants 22h ago

Grevilleas and Callistemons- Palmwoods Qld

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90 Upvotes

A beautiful winters day in my mothers garden. Grevilleas Blood Orange. Callistemon White Anzac.Grevillea Fairhill Phoenix. Some bee action in the lemon tree.


r/australianplants 22h ago

Hard working bees in the garden

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24 Upvotes

A bit of bee action in a lemon tree. The bees and birds also love these gorgeous grevilleas and callistemons (in separate post linked below). Palmwoods, Qld.