Plant Species

August Birth Flower: Gladiolus and Poppy

August claims two birth flowers with wildly different personalities: the sword-tall gladiolus that stands proud in the cutting garden and the tissue-paper poppy that blooms briefly and burns bright. Here is what each one means and how to actually grow them.

The short version

The short answer

August has two traditional birth flowers: the gladiolus (Gladiolus x hybridus) and the poppy (most commonly Papaver rhoeas, the red corn poppy, or Papaver orientale for the perennial type). The gladiolus is the primary birth flower, associated with strength, moral integrity, and infatuation. The poppy is the secondary flower, carrying meanings of remembrance, peace, and imagination that stretch back to ancient Mesopotamia.

Both flowers are beloved as gifts and in garden arrangements. Gladiolus grows from corms planted in spring and blooms roughly 10 to 12 weeks later, with a single spike carrying up to 20 florets that open progressively from the bottom up. Poppies self-sow readily from seed and need almost nothing from you once established in the right spot.

How to grow gladiolus and poppies: zone-honest care

Gladiolus grows from corms, not bulbs, and the single most important fact that general guides miss is that Grandiflora hybrids are perennial only in zones 8 and warmer. In zones 5, 6, and 7, they behave as annuals unless you dig them out after the first frost and store them through winter at 35 to 45 degrees Fahrenheit in a paper bag or mesh sack with dry peat moss. I do this every November in my zone-7b plot and it adds maybe 45 minutes of work to the whole season. The payoff is that those stored corms often produce larger spikes the following year than new corms from the nursery would. If you are in zone 5 and want blooms in August specifically, your succession planting window runs from mid-May through early July, starting a new batch of corms every 10 to 14 days. Zone 6 gardeners can start a week or two earlier. Each planting takes 10 to 12 weeks to bloom, so the math tracks.

Plant corms 4 inches deep and 6 inches apart in full sun, in soil that drains well and has been amended with compost. Water about an inch per week and stop guessing by feel. Tall-growing varieties like 'Traderhorn' will reach five feet and need staking once they hit about two feet, especially in anything that gets afternoon wind. Thrips are the main pest to watch for: they cause silvery streaking on the leaves and buds that fail to open. Treat with neem oil or insecticidal soap at first sign. Before storing corms in fall, soak them briefly in warm water to kill any thrips hitching a ride into storage, otherwise you import the problem into next season.

Poppies are easier but require honesty about which species you are growing. Annual corn poppies (Papaver rhoeas) and Shirley poppies scatter seed directly in fall or very early spring, germinate in cool soil, and can bloom into late summer if you do successive sowings. Do not start them in trays; they have fragile taproots that dislike transplanting. Scatter the fine seed over prepared soil and press it in lightly because it needs light to germinate. Oriental poppies (Papaver orientale) are perennial in zones 3 through 7 but they peak in June, go fully dormant through the summer heat, and re-sprout in fall. They will not bloom their first year and bloom small their second. By the third year in the ground they produce the massive eight-inch dinner-plate flowers you see in photographs. South of zone 7 the heat and humidity break them; they are not a Southern garden flower.

History, folklore, and a note from the garden

The gladiolus arrived in European gardens via Dutch traders who imported South African wild species in the 18th century, but the Romans were acquainted with Mediterranean species long before that. Ground gladiolus corms mixed with goat's milk was a documented folk remedy for various ailments. The association with gladiators came through the flowers' abundance along the roadsides near Roman amphitheaters, and possibly through the sword-leaf shape, though historians debate whether the gladiator-gladiolus connection was as literal as the popular story makes it. What is well-documented is that Roman women threw the flowers into the arena after a winning bout, which is a more specific and interesting origin story than most cut-flower histories carry.

Poppy seeds can lie dormant in soil for decades and spring to life when the ground is disturbed, which explains the seemingly miraculous red tide that swept across the churned-up battlefields of Belgium and France after the armistice in 1915. John McCrae's poem 'In Flanders Fields' fixed the image permanently into collective memory, and the red paper poppies worn in Commonwealth countries every November 11 trace directly back to that ecological fact. The seed was already there. The war just turned the soil.

I grow both in my summer cutting bed, though I learned to keep my expectations honest about the poppy timing. The gladiolus is the workhorse of August vases at my house, reliable and generous and happy to be cut. The annual poppies I scatter in a corner every March and let them do what they want, which usually means they show up somewhere slightly unexpected and bloom for three weeks in early summer before the heat finishes them. The seed pods dry on the stem and I cut them for arrangements in September. If you are buying a gift for an August birthday, a vase of gladiolus spikes in whatever color suits the person is a better choice than most things you could find at a shop. They last, they make a room feel inhabited, and they carry the right message.

August Birth Flower: Gladiolus and Poppy

The short answer

The August birth flowers

Gladiolus: meaning, symbolism, and what the Victorians really meant

Poppy: layers of meaning from Mesopotamia to Monet

How to grow gladiolus and poppies: zone-honest care

History, folklore, and a note from the garden