September Birth Flower: Aster & Morning Glory Meaning and Care Guide

Anyone born in September inherits a dual botanical legacy that few other months can claim: the star-shaped aster and the trumpet-throated morning glory. The september birth flower designation actually covers both blooms, each with its own growing habits, symbolic weight, and place in floral history, and this article walks through their meanings, care requirements, and the best ways to give or grow them. Along the way, we will look at how aster meaning and morning glory symbolism intersect with September birthday flowers traditions, compare the two botanically, and offer field-tested advice for anyone shopping for or arranging these particular stems.

What Is the September Birth Flower?

The september birth flower is not a single species but a pair: the aster (genus Symphyotrichum, formerly Aster) and the morning glory (genus Ipomoea). This dual assignment dates back to Victorian and Edwardian floriography charts, where different regional lists sometimes disagreed on a single “true” flower for the month, and modern florists have simply kept both. Aster typically takes the primary spot on most contemporary birth flower calendars, with morning glory as the secondary or companion bloom.

Asters bloom from late July through October depending on cultivar and hardiness zone, with peak color intensity in September across USDA zones 4 through 8. Morning glory, by contrast, is a summer-into-fall annual vine that flowers from June until the first hard frost, producing new blossoms daily that open at dawn and close by early afternoon. Because both plants reach a visual peak in early autumn, their pairing as September’s emblem makes horticultural as well as symbolic sense.

How Does Aster Meaning Differ From Morning Glory Symbolism?

Aster meaning centers on love, wisdom, and patience, drawing from the Greek word “aster,” meaning star, a reference to the flower’s radiating petal structure. Morning glory symbolism instead leans toward themes of affection that renews itself daily, along with mortality and the fleeting nature of beauty, since each individual bloom lasts only a single morning before wilting.

In practice, gift-givers often choose aster arrangements for anniversaries or to express steadfast devotion, while morning glory appears more often in garden design or pressed-flower keepsakes rather than cut arrangements, since its bloom life off the vine is measured in hours rather than days. A single aster stem, by comparison, holds up in a vase for 7 to 10 days at 68 to 72°F with proper water changes.

How Do You Identify and Grow the September Birth Flower?

Identification starts with structure: asters display daisy-like composite flower heads roughly 1 to 3 inches in diameter, with 20 to 40 thin ray petals surrounding a yellow or golden central disc, in shades of purple, lavender, pink, white, and deep blue. Morning glory, conversely, produces funnel-shaped single blooms 2 to 3 inches across with five fused petals, most commonly in shades of blue-purple, magenta, and white, and climbs via twining stems that can reach 8 to 12 feet in a single growing season.

Both plants tolerate a range of soils but perform best under specific, differing conditions. Asters prefer well-drained loam with a soil pH between 6.0 and 6.8 and benefit from full sun exposure of at least 6 hours daily, while morning glory tolerates poorer soil and actually flowers more prolifically when nitrogen levels are kept moderate rather than high.

What Are the Main Cultivated Varieties of September Birth Flower?

Several cultivars dominate the commercial and garden trade for both species, and recognizing them helps when selecting plants or arrangements.

• New England Aster (Symphyotrichum novae-angliae) — reaches 3 to 6 feet tall, with dense clusters of purple-pink blooms, hardy to USDA zone 4.
• New York Aster (Symphyotrichum novi-belgii) — a more compact 1 to 4 foot habit, favored in cut-flower production for its longer stem length.
• China Aster (Callistephus chinensis) — technically a separate genus but widely marketed as “aster,” prized by florists for its 3 to 4 inch double blooms and 8-day average vase life.
• Common Morning Glory (Ipomoea purpurea) — the classic heart-leaved vine with 2 to 3 inch trumpet flowers.
• Heavenly Blue Morning Glory (Ipomoea tricolor) — noted for its sky-blue petals with a white-and-yellow throat, a favorite in trellis plantings.
• Moonflower (Ipomoea alba) — a night-blooming relative sometimes included in September plantings for its fragrant, 4 to 6 inch white flowers.

Florists sourcing September birthday flowers for arrangements typically favor China aster and New York aster hybrids over wild New England varieties, since their stems run straighter and hold up better during transport and refrigerated storage at 34 to 36°F.

How Should You Care for September Birth Flower Arrangements?

Cut aster stems last longest when recut at a 45-degree angle under running water and placed immediately into a vase filled with fresh, room-temperature water mixed with commercial flower food at the manufacturer’s recommended dilution, usually one packet per quart. Water should be changed every 2 to 3 days, and any foliage sitting below the waterline must be stripped to prevent bacterial buildup that shortens vase life from a potential 10 days down to 4 or 5.

Because morning glory is rarely used as a cut flower due to its single-morning bloom cycle, most florist-grade September arrangements substitute textural elements like aster foliage, ornamental grasses, or seasonal accents such as scabiosa pods to evoke the vine’s delicate character without the practical drawback of rapid wilting. Home gardeners who want morning glory in a display often grow it on a small tabletop trellis instead, harvesting individual blooms each morning to float in a shallow bowl of water for a few hours of decorative use.

What Temperature and Light Conditions Extend September Birth Flower Vase Life?

Aster arrangements last longest away from direct sunlight, heating vents, and ripening fruit, ideally kept in a room between 65 and 72°F with indirect light. Direct sun exposure can raise petal temperature enough to accelerate wilting by 30 to 40 percent compared to shaded placement.

Refrigeration overnight, when possible, at 36 to 40°F can extend a bouquet’s usable life by an additional 2 to 3 days, a technique commercial florists use routinely between processing and delivery. Home users without floral refrigeration should instead prioritize daily water changes and keep the arrangement away from drafts, since asters are moderately sensitive to ethylene gas produced by nearby fruit bowls.

Why Do People Choose Aster and Morning Glory for September Birthdays?

The tradition of gifting a September birth flower ties back to centuries-old European floriography, where specific blooms were assigned symbolic meanings tied to virtues or sentiments. Aster’s association with love and wisdom made it a popular 19th-century gift for expressing loyalty, while its star shape gave it added resonance in cultures that linked September’s early autumn skies with stargazing traditions.

Today, most buyers select aster bouquets for birthdays specifically because the flower’s meaning aligns neatly with sentiments appropriate to a milestone year, and because the bloom’s autumnal purple and lavender tones photograph well for social sharing. A dozen-stem aster bouquet typically runs $45 to $75 at a full-service florist, depending on stem variety and whether filler flowers such as solidago or waxflower are included.

How Do September Birthday Flowers Compare to Other Birth Month Blooms?

Compared with birth flowers from adjacent months, aster stands out for its unusually long cut-flower shelf life and its wide color range, while morning glory is distinctive for being one of the few birth-month flowers essentially unavailable through commercial floristry. For context, August’s gladiolus and poppy offer far taller stems, often 24 to 36 inches, suited to dramatic vertical arrangements, whereas aster’s 12 to 20 inch stems work better in rounded, garden-style bouquets.

Readers curious about how each month’s flower stacks up can find a broader breakdown in a complete guide to all 12 birth month flowers, which outlines bloom seasons, symbolism, and typical arrangement styles side by side. Unlike June’s rose and honeysuckle pairing, which centers on fragrance, the September pairing centers more on visual symbolism, since neither aster nor morning glory carries a particularly strong scent profile.

Feature	Aster	Morning Glory
Botanical genus	Symphyotrichum / Callistephus	Ipomoea
Bloom season	Late July–October	June–first frost
Flower diameter	1–3 inches	2–3 inches
Typical vase life	7–10 days	4–8 hours (single bloom)
Growth habit	Upright clump, 1–6 feet	Twining vine, 8–12 feet
Common use in florist arrangements	Cut bouquets, mixed arrangements	Rare; primarily ornamental garden vine
Ideal soil pH	6.0–6.8	6.0–7.0

My Experience with September Birth Flower Arrangements

Working with September clients over several autumn seasons has taught me that aster is far more forgiving than its delicate appearance suggests. I have processed New York aster shipments that sat in transit for 18 hours at moderate temperatures and still opened fully within a day of arrival, something I would not risk with more fragile blooms like ranunculus. The one consistent issue I have seen is premature petal drop on China aster varieties when the water is allowed to sit unchanged past the 3-day mark, so I now flag that specifically for clients ordering birthday bouquets for milestone events.

I have also fielded plenty of requests for morning glory in bridal or birthday arrangements, and I always explain upfront that the vine’s single-morning bloom cycle makes it impractical for cut work. Instead, I have had good results substituting deep purple aster combined with trailing sweet pea vine or ornamental millet to approximate the same climbing, star-strewn look clients picture when they ask for “that September flower with the little trumpet blooms.” Clients booking through our Birthday collection frequently request this substitution once they understand the practical limitation.

What Occasions Suit Aster and Morning Glory Gifts Beyond Birthdays?

Beyond birthdays, aster’s meaning of enduring love makes it a natural fit for anniversaries, particularly 20th wedding anniversaries, where it serves as the traditional floral emblem in several regional gift-giving charts. A mixed arrangement pairing purple aster with white Roses is a combination I have arranged repeatedly for clients wanting both a birth-flower nod and classic romantic symbolism in a single 14-stem bouquet.

Aster also works well in sympathy and remembrance contexts because of its association with wisdom and reflection, and several of my clients have specifically requested it for memorial arrangements held in September. For readers navigating those decisions, the site’s guide on condolence flowers and faith traditions offers useful context on which blooms suit different cultural expectations.

Which Complementary Flowers Pair Best With September Birth Flower Bouquets?

Certain companion flowers consistently enhance an aster-centered arrangement without overwhelming its star-shaped structure. Stem counts and proportions matter here: a balanced 12-inch round bouquet typically uses 6 to 8 aster stems as the visual anchor, supplemented by smaller quantities of complementary blooms.

1. Solidago (goldenrod) — adds textural contrast and golden color at a ratio of roughly 3 stems per 8 asters.
2. Scabiosa pods — echo the star shape of aster petals in a more muted, dried texture.
3. Dahlias — provide larger focal blooms, 3 to 5 inches wide, that balance aster’s smaller flower heads.
4. Sunflowers — offer a bold yellow contrast against aster’s cooler purple and blue tones.
5. Eucalyptus foliage — extends arrangement width by 4 to 6 inches while keeping the palette muted.

Clients wanting a brighter, sunnier September arrangement often request aster combined with Sunflowers rather than the more traditional dahlia pairing, particularly for casual birthday gifts rather than formal events. Those preferring a cooler, monochromatic look sometimes request aster alongside Hydrangea, which offers a similarly full, rounded bloom shape that complements aster’s star form without competing for visual attention.

FAQ

Is aster or morning glory the official September birth flower?

Both are recognized, but aster is considered the primary september birth flower on most modern floral calendars, while morning glory serves as a secondary or companion symbol tied to the same month.

How long do aster flowers last after cutting?

A properly conditioned aster stem typically lasts 7 to 10 days in a vase when kept at 65 to 72°F with water changed every 2 to 3 days and floral preservative added at the standard dilution rate.

Can morning glory be used in a cut flower arrangement?

Morning glory blooms individually last only 4 to 8 hours once cut or picked, since each flower naturally closes by early afternoon, making it impractical for standard florist arrangements; most florists substitute aster, sweet pea vine, or trailing greenery to achieve a similar look.

What does the aster flower symbolize for a September birthday?

Aster meaning centers on love, wisdom, and patience, derived from its star-shaped bloom and its Greek etymological root, making it a popular choice for expressing steadfast affection or admiration on a September birthday.

What colors do September birth flowers come in?

Asters range from deep purple and lavender to pink, white, and blue, typically in blooms 1 to 3 inches across, while morning glory most commonly appears in blue-purple, magenta, and white with a 2 to 3 inch trumpet shape.

Sources: Wikipedia – Symphyotrichum and Royal Horticultural Society – Ipomoea