Holly Blue Butterfly – Celastrina argiolus

The Holly Blue butterfly (Celastrina argiolus) is one of the first blue butterflies to emerge in the spring. This little man is only about an inch around. I know he’s a boy as females have black wing edges/fringe.


Primary Larval Food Plants:

  • Holly (Ilex spp.)
  • Ivy (Hedera helix)
  • Bramble (Rubus fruticosus)
  • Dogwoods (Cornus spp.)
  • Gorses (Ulex spp.)
  • Snowberries (Symphoricarpos spp.)
  • Spindle (Euonymus europaeus)

Nectar Sources:

  • Bramble (Rubus fruticosus)
  • Bugle (Ajuga reptans)
  • Buttercups (Ranunculus spp.)
  • Forget-me-not (Myosotis spp.)
  • Holly (Ilex spp.)
  • Ivy (Hedera helix)
  • Privet (Ligustrum vulgare)
  • Thistles (Cirsium and Carduus spp.)
  • Water Mint (Mentha aquatica).
  • Honeydew / Sap


Β© Ilex ~ Midwestern Plant Girl

18 thoughts on “Holly Blue Butterfly – Celastrina argiolus

          • I wish I could say 110 Monarchs but that’s not the case. I saw all of two during spring migration. I see them beginning about late September and maybe a few early travelers about mid August. In October and November I’ll see up to 8-12 or so a day and some of those will mate and lay eggs with that last hatch migrating to Mexico. As you know the numbers are now very low and the government is thinking of putting them on the threatened list. I think they need to go on endangered list but all of that will be for naught unless something is done about the use of pesticides and herbicides. Getting rid of DDT saved a number of birds from extinction not that long ago. And, so it is with the bees and butterflies and present day use of poisonous chemicals that are contributing to.the death of these delicate pollinators.


            • I hear ya about how action isn’t taken until it’s too late… I hardly see any monarchs up here, however I saw one today! I thought I had heard the gov was doing something good for once and and planting monarch friendly plants and roosts in ‘flyway’ zones. I could be wrong…. Let’s hope not!
              Until Monsanto and the other groups that control our food in this country go away in a ball of flames… We’ll continue to eat chemicals. So sad.

              Liked by 1 person

  1. Pingback: Scarce large blue butterflies, Dutch jubilee | Dear Kitty. Some blog

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