Inger,
Try these sites:
http://www.mearns.org.uk/mrssmith/bees/flowerlist.htmhttp://bee.airoot.com/beeculture/book/
I've also got a book by British beekeeper Owen Myer with a fairly detailed
list of nectar plants. Most of it is valid here in the Northeast U.S. as
well, although the dates are a bit off. Some that are listed as minor flows
are quite major here (like goldenrod) and vice versa. * denotes pollen
source only.
Happy reading,
Todd.
------------------------------------
Major Plants:
April:
Plum
Damson
Cherry
Pear
May:
Apple
dandelion
hawthorn
sycamore
June:
blackberry
field beans
raspberry
sainfoin
white clover
July:
bell heather
blackberry
lime (basswood/linden)
white clover
willowherb
August:
bell heather
blackberry
ling heather
red clover (though I don't believe that A. Mellifera uses red clover in the
U.S.)
willowherb
Sep/Oct
Ling heather
mustard
Minor Plants:
Feb/March
*alder
almond
butter burr
celandine
coltsfoot
crocus
*elm
gorse
*hazel
*poplar
prunus
snowdrop
violet
willow
winter aconite
*yew
April:
almond
*ash
berberis
box
coltsfoot
crab apple
currants
dead nettle
gooseberry
gorse
laurel
maple
willow
May:
*beech
bilberry
bluebell
mustard
broom
forget-me-not
gorse
holly
horse chestnut
*oak
*plantain
thrift
wallflower
June:
bindweed
catmint
charlock
cranesbill
jacob's ladder
lucerne
melilot
firethorn
red clover
thyme
vetch
viper's bugloss
white byrony
*wild rose
July:
bergamot
borage
cornflower
cranesbill
figwort
flax
hogweed
hollyhock
hyssop
knapweed
lavender
mallow
*meadowsweet
mignonette
mullein
*poppy
privet
ragwort
red clover
sage
sweet chestnut
August:
balsam
borage
chicory
golden rod
mallow
marjoram
*meadowsweet
mint
mullein
sunflower
purple loosestrife
sage
sea lavender
thistle
white charlock
Sep/Oct:
balsam
gorse
ivy
michaelmas daisy
sea lavender
thistle