Gardening and Nature

When Do Morning Glories Bloom?

Morning glories (Convolvulus sp.) are some of the latest annuals to bloom.

A blue morning glory has a yellow central eye.

Morning glory seeds have a hard seed coat. The seeds need a good, twenty-four hour soak before planting.  This adds an extra step to growing them from seed, but I was determined to include these old-fashioned beauties in my garden.

I have a “thing” for blue, and blue flowers and morning glory blooms are about as blue as they get.

The morning glory vine has lots of leaves but no blossoms

In mid-August and the vine was vigorous, reaching up to the top of the nine-foot arch. Yet, there were no blooms.

Getting morning glories to bloom is a common problem.  Here’s what I discovered.

Morning Glories Bloom as Late as 120 Days after Germination

Bloom time depends on the species. I planted ‘Clark’s Heavenly Blue.’

Since the first seedlings died, I probably wasn’t ready to transplant seedlings outside until June.

My plants weren’t blooming until late August.

The upside is that the morning glories were appreciated at a time in the growing season when most of the plants had finished their bloom show.

Less Fertilizer Is Better

Once, I grew the most beautiful tomato plants you ever saw.  The foliage was green and voluminous.  The plants never drooped or spotted.

And we never got a tomato.

My over-zealous addition of fertilizer had cause this disappointment.  The plants put all of their energy into growing, not reproducing.  Fertilizing lesson learned.

Morning glories bloom best without added fertilizer.  Though I use homemade compost in my garden, I don’t use added fertilizer on most plants, except potted ones.

A bright blue morning glory opens its petals in the sun.

The morning glories are in the vegetable garden, so I’m hoping over-fertilizing is not the problem.

Do you have any plants that are causing you bloom anxiety?

Hopefully, our warm temperatures mean a long autumn season, and time to enjoy many more flowers even as the hours of sunlight wane.

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