I will ask my wife Luc, so far nobody here has ever warned me for those.
Yesterday we spoke about eating noina seeds, green mango's, having poisonous plant in the garden (with baby's, toddlers, puppy dogs) and she never heard of those being poisonous. Plumeria, nerium oleander, fragrant yellow rose-apple and so on. I read some are very poisonous (or parts of the plants) but why nobody here knows that? They grow everywhere.
Maybe the Thai are ignorant but if they were really dangerous they would know i guess.