When Do Marigolds Bloom? How Lengthy Does It Take Marigolds To Bloom?

For a big proportion of individuals, their first expertise with gardening is rising marigolds (Tagetes spp.). These crops are extremely simple to develop, have an exceptionally lengthy bloom time, and are extremely useful to the backyard. However when do marigolds bloom?

Marigold BloomPin

A number of the hottest species embrace the next:

  • African marigold (Tagetes erecta, additionally known as Mexican marigold or American marigold),
  • French marigold (Tagetes patula)
  • Mexican mint marigold (Tagetes lucida, usually simply known as Mexican marigold)
  • Signet marigold (Tagetes tenuifolia)
  • Widespread marigold (Calendula officinalis, typically additionally known as pot marigolds)

However with over 50 species and quite a few cultivars to select from, you is likely to be nervous about discovering a species that blooms at a particular time of 12 months to match your different crops.

When Do Marigolds Bloom?

It would come as some shock to seek out that every one true marigolds bloom across the similar time and final about so long as one another.

Nevertheless, precisely when the crops bloom and the way lengthy may be influenced by how you take care of them.

From Seed To Bloom

Marigold seeds take between 7 and 14 days to germinate when stored in fixed soil temperatures of 70° to 75° levels Fahrenheit however might take longer in cooler soil circumstances.

Humidity, mild ranges, and soil moisture also can barely have an effect on how rapidly the seeds germinate.

The wait from the second you plant marigolds till the time they bloom varies a bit from one species to a different, usually lasting from a mere 8 weeks to round 3 1/2 months.

Notice that French marigolds develop barely sooner than different marigold varieties, whereas signets develop barely slower.

Encouraging Blooms

Timing is usually the whole lot for these crops, and beginning them off early indoors can usually lead to earlier bloom instances.

For a lot of species, deadheading might help prolong how lengthy your marigold flowers for.

Indoor marigolds may be satisfied to bloom for longer durations attributable to their capability to regulate their setting.

Selecting Marigolds By Characteristic And Bloom Time

Whereas marigold crops are inclined to have related bloom instances, that doesn’t imply all marigold blooms are equal.

Listed here are the important thing variations between the most important varieties:

  • African marigolds develop as much as 2′ toes tall with both single or double hemispherical blooms in orange, purple, or yellow showing all through summer season into early fall.
  • French marigolds attain as much as 3′ toes tall with single or double blooms of usually bicolor orange, purple, and yellow.
  • Mexican marigolds are one other summer season to early fall bloomer however have clusters of small yellow flowers.
  • Signet marigolds are dwarves with 5 ray florets of orange to yellow hues and bloom from midsummer into fall, typically surviving the primary minor frosts.
  • Triploid marigolds (Tagetes patula x erecta ‘Triploid’) are a cross of the African and French marigolds with a 12″ inch peak and a couple of 1/2″ inch large blooms, but can bloom from late spring effectively into fall attributable to being fully sterile.

Transient Blooming Timeline

For a fast reference, right here’s a quick recap of your marigold’s development phases.

Any delays in these phases can sign that one thing’s gone improper.

  • Planting Time – That is both as much as 8 weeks earlier than the ultimate frost when beginning indoors or after the ultimate frost outdoor.
  • 7 to 14 days after planting – Your seeds must be germinating
  • 2 to three 1/2 months after planting – The primary blooms must be showing

Keep in mind that the planting time will even have an effect on how early and lengthy your marigolds bloom.

Why Hasn’t My Marigold Bloomed But?

So what occurs in case your marigolds aren’t blooming after they’re imagined to?

One thing might have gone improper along with your marigold, so let’s have a look at some doable culprits.

Illness Or Pest Issues

Whereas uncommon, marigolds can nonetheless endure from some infestations and are vulnerable to fungal illness – particularly fungal or bacterial root rot.

This may occasionally trigger the plant to lose very important fluids and vitamins, delaying and even stopping blooms from forming.

Keep away from leaving your marigold crops in soggy soil for minimal danger of those issues.


All forms of marigolds can develop in nearly any sort of soil, however whereas they will survive in poor soil, signet marigolds can have hassle producing flowers in overly nutrient-rich soil.

Additionally, keep in mind that marigolds nonetheless want a point of vitamin to bloom, so the best soil can have some vitamins, and it’s possible you’ll must fertilize each infrequently.

Keep in mind that an excessive amount of nitrogen will trigger the plant to concentrate on foliage development as an alternative of flowering.


As talked about, it is a key consider inflicting root rot.

Marigolds usually have shallow roots, so guarantee they’ve moist soil with out going overboard.

The very best watering tactic is to make use of the soak and dry methodology while you really feel dry soil 1/2″ inch down.

Insufficient Daylight

Lastly, marigolds don’t must continually be out within the full solar, however they do like their daylight. An excessive amount of shade can stunt development or stop blooms from forming.

Nevertheless, too many hours of direct daylight at noon might additionally hurt the plant for those who’re in a warmer local weather.

To make sure enough daylight, give your marigolds direct morning or night publicity and lightweight afternoon shade, or place them the place they’ll obtain vivid, oblique mild.

Extra On Caring For Marigolds