When we say ‘Edible’, it doesn’t always mean they are specifically what your bird will enjoy, will eat or is highly nutritional. The word ‘Edible’ simply means they are safe if they are eaten and not toxic. Some flowers have no value nutritionally while others will be highly nutritional. Either is fine for your parrot to eat. Try as many edible flowers as you can for your birds. Most birds do enjoy eating them.

Acacia


Anise (Pimpinella anisum)

Apple

African Tulip Tree (Spathodea campanulata)

Apple (Malus domestica)

Bald Cypress (Taxodium distichum)

Basil (Ocimum basilicum)





Bee Balm (Monarda)

Borage (Borago officinalis)


Bottlebrush (Callistemon spp.)

Calendula (Calendula officinalis) Sometimes called "poor man's saffron",


Carnation (Dianthus caryophyllus)


Chamomile (Chamaemilum nobile) Especially good for parrots when calming influence is needed.


Gypsy eating camellia flower

Edible Flowers

TIP: when offering old world flowers such as Roses, try the old traditional ones. They seem more appealing to animals as they have a stronger scents and tastes than the newer versions of flowers.

Stan eating grevillea

Chives (Allium schoenoprasum)

Coriander / Cilantro (Coriandrum sativum)
Crepe Myrtle

Daisies (Bellis perennis). Yellow and white flowers with light mint or clover flavour.

Dandelion (Taraxacum officinale) Older flowers are bitter but my Eclectus parrot does not seem to notice. Also 
offer the dandelion leaves which are an excellent source of nutrition. 

Day lilies (Hemerocallis) Flower buds and blossoms can be consumed at all stages of growth. Note: Many lilies 
(Lillium species) contain alkaloids and are NOT safe for parrots or people

Dill  (Anethum graveolen)
Elderberry flowers (Sambucus canadensis) For colds and chills. 

Eucalyptus 

Fennel (Foeniculum vulgare)
Gardenia (Gardenia jasminoides)
Garlic  (Allium sativum L.)
Gladiolus
Grapefruit 
Grevillea
Gladiolus (Gladiolus spp)

Hibiscus flowers (Hibiscus rosa-sinensis) One of the favourite flowers of most parrot species. 

Honeysuckle flowers (Japanese Lonicera japonica) Only the Japanese honeysuckle is edible and only the blooms should be used as the berries are extremely poisonous. Offer only the flowers so that no berries on the vines will accidentally be eaten. 

Impatiens (Impatiens wallerana) 

Johnny-Jump-Up (Viola tricolor) Leaves are also edible and contain vitamin C. Lilac (Syringa vulgaris)

Jarcaranda (Jacaranda mimosifolia)
Kumquat
Lilac (Oleaceae Syringa)
Lime 
Lemon 
Melalecuca (Melaleuca quinquinervia)
Marigold flowers (Tagetes signata pumila)  
Milk thistle (Silybum marianum)leaves and seeds which are known for benefits to liver. 

Nasturtiums (Tropaeolum majus)Leaves can be eaten too.

Orchid Tree (Bauhinia verigata)
Okra (Abelmoschus esculentus)
One Sided Bottlebrush (Calothamnus Torulosus)
Orange 
Oregano (Origanum vulgare)
Pansies (Viola X Wittrockiana) 
Passionflowers (Passifloraceae - passion flower family) Passiflora caerulea and Passiflora edulis are two of the hundreds of varieties. Some vines produce large greenish white and purple blossoms and then orange or purple edible fruit, depending upon the variety of the plant. 

Petunia (Petunia spp.)
Plum (Prunoideae Prunus)
Pumpkin (Cucurbita pepo or Cucurbita mixta)
Roses (Rosa spp)
Rosemary (Rosmarinus officinalis)
Runner Beans (Phaseolus coccineus)
Sage (Salvia officinalis)
Sunflowers (Helianthus annuus)
Thyme (Lamiaceae Thyme)
Tulips (Tulipa spp.) 

Vegetable flowers Butterblossom squash flowers have slight squash taste. 

Zucchini flowers, podded pea flowers (ornamental peas are poisonous), okra, pumpkin, and runner bean flowers are edible. 

Violets (Viola odorata)