Topic: Non edible flowers

[Mrs Ava]

almond blossom, contains hydrocyanic acid
amaryllis, contains hippeastrine, lycorine and amaryllidine
autumn crocus, contains colchine
daffs, contain galanthamine, haemanthamine, lycorine
flax, contains linamarin
hydrangea, contains hydrangin
lilly of the valley, contains convallatoxin
sweetpea, contains aliphatic amino acid glycoside !

There are loads more flowers which are poisonous.  Seeing as flowers are trendy on our plates these days, thought this made menu altering reading.  :o

[ACE]

You forgot my favorite, Aconitum, or monkshood, wolfbane, whatever you would like to call it.

[Lady Cosmos]

You better can be very careful with eating flowers. The flowers used for garnish are indeed not always edible and some are treated with PESTICIDES!!
Best is not to eat the whole flower but only the petals.
More NON-edible ones: Mistletoe, Lantana, Anemone,Mirabillis, foxgloves, Daffodils, Azalea, Colchicum(winter crocus, Iris, Helleborus, Clematis, buttercup, Oleander, Wisteria but there are many more.

[john_miller]

To expand upon L.C.'s point: there is a relatively new class of chemicals called chloronicotynls which have extended times of effectiveness from application. They are effective against such common pests as whitefly, aphids and mealy bug and are cheap to apply so are widely used. They are available as granules which are mixed into the soil at planting and then taken up by the plant and disbursed systemically through the entire plant where they can are traceable for up to a year. They are only cleared for use on ornamentals so harvesting flowers for consumption from a plant probably intended only for ornamentation is not advisable unless you can verify their culture.
Given that the majority of flowers aren't edible ( Delphiniums, Brugmansia, or Datura haven't been mentioned yet) wouldn't a list of edible flowers be useful (and briefer) here?