Oh No! They are back!

I was admiring the tall stalks of the German irises today and I found one which appeared to have broken at the base! This sometimes happens because they can grow as tall as 5 feet sometimes but not this one.


Sometimes birds will attempt to perch on the very tallest of the four to five foot stems and in the process the buds will break but not the entire stem.

Upon closer inspection I identify the offender! Iris borers! The stems had been eaten from the inside out and had a strong rotten smell.


The moth lays eggs on the plant and upon hatching the larvae bore into the leaves and rhizomes eating away destroying the plant. Removing dead leaves in the Fall where the eggs are deposited and spraying in Spring are key preventative routines.

Of course, I walk through the garden every morning so to have missed early signs means they must move fast!

I sprayed all the iris plants with a “natural” spray in an attempt to stop any other borers in their tracks! About ten years ago I had two large loblolly pines removed which were in the bed along the front of the house. The arborist did that stump grinding thing which created very good soil. The bed made a perfect location for a bed of remonte (reblooming) irises!

They were beautiful for several seasons until the iris borer moved in!


The beds have recoved after keeping a vigilant eye and spraying an insecticide in the spring.

The purples bloom first, than the yellow and Bronzes, and in May the white, immortality, is the last. They rest in the summer and usually produce another stalk in the Fall.


They azaleas continue to bloom as everything is greening up as the first leaves of Spring appear.


The timber bamboo is also growing new huge shoots (phyllostachys vivax). A sure signal that spring has arrived!


And I am totally in love with the new hybrid African-French marigolds! The flowers are huge!

I could continue posting pictures of azaleas…

So much to keep me busy and generally out of trouble!

Well…

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13 Comments

Filed under General Gardening

13 responses to “Oh No! They are back!

  1. Everything looks beautiful Arthur! I’ve never had iris borers, yikes!

    Liked by 1 person

  2. Your iris that survived are beautiful. Your azaleas look great. I watch The Masters just to see the azaleas.

    Liked by 1 person

  3. That’s too bad about the iris borers. Luckily I’ve never had them.
    The azaleas are amazing!

    Liked by 1 person

  4. seems like a nepalese cauli

    Like

  5. Everything looks fab, Arthur except those broken German irises! 😦

    Like

  6. I hate those borers…..Decimated many of ours and left that slushy rotten root behind. But the rest of your garden looks lovely and healthy.

    Like

  7. Chemicals banned in Ontario. This is the only case where I would consider bringing back chemicals temporarily – just for those borers! (smile)

    Like

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