Hi all,
Does anyone has had experience with Pinus halepensis for bonsai training? They are very abundant in southern Portugal, with a lovely bark and short needles of a beautiful light green, although not very densely ramified. They propagate very easily in the wild from seed, resulting in lots of trees of various ages spontaneously appearing everywhere, some of them pretty stunted for the hot dry weather and sandy soil.
Best,
No personal experience, but if it’s anything like the sub tropic pines, it could react similarly to Pinus Pinea techniques. In any case, just start experimenting! 
Nevertheless I have never seen any info specifically for pinus pinea though. Can you point out some source I can check? In what ways are pineas different from other single flush pines like mugo or sylvestris, in the way they react to bonsai horticulture techniques?
Oh already did…! (Start experimenting), too soon for any conclusions however
Not sure if Ryan has specific experience with these, but he does mention that they should react exactly the same to his theory on Pinyon pine and Black pine (nigra).
And if I understood it correctly, you want to really really build their energy up, set the structure and then decandle once like a multiflush, then continue its life as a single flush pine.
Hey there Filipepaula - I have several Pinus halapensis(Aleppo Pine) here in Southern California. I have also spoken to Ryan about them and he has said to treat them like other short needle single flush pines, but ThomasUrban is exactly right with decandling once and then treating it as a single flush - so the tree kind of settles into the ‘in-between’ category.
Check here for info: https://forum.bonsaimirai.com/search?q=pinus%20halapensis
And here: https://forum.bonsaimirai.com/search?q=aleppo
Best of luck. Bret