What Flowers to Send in September (Occasions + Seasonal Picks)

September bouquet with asters, dahlias, and peach roses on a neutral background in soft daylight.

As summer fades into early fall, September brings a softer, slower energy — and the perfect opportunity to send flowers that feel warm, thoughtful, and seasonal.

Whether you’re celebrating a birthday, saying thanks to a teacher, or simply bringing beauty into someone’s day, here’s your guide to the best flowers to send in September.


Aster and morning glory flowers styled together on a linen surface in soft fall lighting.

September Birthdays: Aster & Morning Glory

September’s birth flowers are aster and morning glory — both symbolic, delicate, and beautifully expressive.

  • Aster: A symbol of love, wisdom, and elegance
  • Morning Glory: Associated with affection and renewal

They pair beautifully with other September favorites like dahlias, lisianthus, and garden roses, creating lush, personal arrangements perfect for birthday gifting.


Teacher appreciation bouquet wrapped in kraft paper with sunflowers and alstroemeria on a clean bench.

Back-to-School & Teacher Appreciation Bouquets

The first few weeks of September are filled with transitions — and your favorite teachers deserve a little floral love. Gifting flowers at the start of the school year is a beautiful way to say:

  • “Thank you”
  • “Welcome back”
  • “You’re appreciated”

Go-to flowers for teachers:

  • Sunflowers
  • Alstroemeria
  • Soft-toned roses
  • Gerbera daisies
  • Petite seasonal mixes wrapped in kraft paper

Pro tip: Pair your bouquet with a handwritten card for an extra thoughtful touch.


Just-because fall bouquet with seasonal blooms styled flat on a light neutral background.

Just-Because Arrangements for Early Fall

Some of the best flowers are the ones sent with no special reason at all. September is the perfect time to:

  • Brighten someone’s week
  • Celebrate a small win
  • Show up for someone in a season of change

Our designer’s choice arrangements in soft rust, gold, blush, and peach tones reflect the season without being too “autumn-y.”


Sympathy bouquet with blush roses and lisianthus styled on linen in soft natural light.

Early Fall Sympathy or Support Bouquets

If someone in your life is going through a difficult moment, a September bouquet in muted tones can speak volumes.

We recommend:

  • Cream or ivory roses
  • Dusty pink lisianthus
  • Eucalyptus and textural fillers
  • Subtle pops of lavender or mauve

Every order comes with the option for a handwritten note — because softness matters.


Seasonal Flowers to Choose in September

Looking for specific blooms? These are the freshest in early fall:

Let us build a bouquet using what’s fresh from the San Francisco Flower Market that week.


 Send September Flowers with Flowers Valley

We design each arrangement with seasonal intent and expert care. Whether it’s a birthday, a thank-you, or a quiet check-in, we’ll help you send something beautiful.

  • Same-day delivery across the Bay Area
  • Pickup available in Concord
  • Custom color palettes and designer’s choice options available

Order today at flowersvalley.com and let someone know they’re on your mind this September.

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