How to Plant, Harvest, and Care for Gladiolus bulbs (Easy Guide)

How to Plant, Harvest, and Care for Gladiolus bulbs (Easy Guide)

Gladiolus is a popular perennial with huge, colorful flowers and towering flower spikes. Gladioli are beautiful cutting blooms that look great in summer bouquets. Here’s how you can plant Gladiolus bulbs in your backyard.

Planting & Care

Planting & Care

Gladiolus is a South African native that thrives in a sunny location with sandy loam soil and adequate water drainage. Gladiolus may grow in any soil that is good for vegetable cultivation. In the spring, mix compost into planting beds to aid water drainage and fertility.

Gladiolus don’t compete well with other plants or weeds, so keep the space around them open for optimum results.

Gladiolus can be planted approximately two weeks before the last spring frost is projected. From planting to flowering, it will take 70 to 90 days. Plant a few corms every two weeks until early summer to ensure a steady supply of flower spikes.

Plant corms 2 to 6 inches deep and cover with 2 inches of soil, depending on their size. In rows or clusters of 10 to 15 corms, space them 5 inches apart. Raise up the soil around the base of the plant after the plants are approximately 6 inches tall to help support the stem.

When the plants are 6 to 10 inches tall, apply a water-soluble fertilizer 4 to 6 inches away from the stems. When the flower spikes begin to show color, apply a second coat.

Maintain a weed-free environment by mulching the plants with a 2 to 4-inch layer of bark mulch, wood shavings, or straw. To get the biggest blossoms, keep your plants regularly hydrated.

To keep the flower spikes from flipping over in the wind, tall kinds will almost certainly require staking. While hilling the soil might assist, the best approach to keep flower stalks erect is to stake individual flower spikes or create a grid with stakes and twine. Supports with a single stem are excellent.

Also, read How to water plants while on vacation [Detailed Guide].



Flower spikes should be trimmed on a slant when the lowest flowers on the stalk begin to show color if you’re growing gladiolus for bouquets.

Leave at least four leaves on the plant before pruning the flower stem to feed the corm for next year’s blooming.

After cutting the flower spike, immediately immerse the cut end in water. Harvesting gladiolus is a breeze with the galvanized 4-section Flower Caddy.

How long does it take to grow gladiolus?

How long does it take to grow gladiolus?

Gladiolus bulbs take 70 to 100 days to grow and bloom, so plant a few corms every few weeks from late spring to mid-July to have blooms for cutting throughout the summer and early fall.

Can you put gladiolus in pots?

Gladiolus planted in short, squat pots will still thrive, but they will easily blow over without the support of long stakes. To accommodate your gladiolas, choose a pot that is at least 12 inches deep and has at least 2 to 4 inches of soil below the corms.

What soil does gladiolus grow best in?

Gladiolus grows in a sunny location with sandy loam soil that drains well. Gladiolus thrive on any soil that is suitable for growing vegetables.

How cold is too cold for gladiolus?

A few tiny gladiolus species may withstand temperatures as low as 15 degrees Fahrenheit (-9 degrees Celsius), but large-flowered gladioli should not be considered winter resistant.

How do you winterize gladiolus?

Remove the cormels (small corms) that surround the base of the new corms. Save the little corms for propagation or throw them away. Hang the corms in a cool, dry, well-ventilated spot in mesh bags or old nylon stockings. Temperatures in the storage area should be between 35 and 45 degrees Fahrenheit.

Can gladiolus bulbs be left in the ground over winter?

Can gladiolus bulbs be left in the ground over winter?

Because gladiolus bulbs, also known as corms, aren’t hardy over the winter, you’ll have to dig them up and store them until spring if you want to plant them again the following year.

Do I need to cover gladiolus for frost?

Wait until most of the foliage has died back before digging up the corms, or do it just after the first frost. If you leave them in the ground, make a note of where they are so you don’t plant over them when they reappear. 2 to 3 inches of mulch should be used, and it should be pulled back in the spring.

How long do gladiolus bulbs last?

Outdoors and inside, gladioli give a long season of flower appeal. They bloom for around two months on average, however, this varies depending on the hybrid. Both outside and indoors, there are ways to extend their season.

What temperatures can gladiolus survive?

What temperatures can gladiolus survive?

Temperatures between 50 to 77 degrees F provide the optimum development, but with sufficient watering, they can endure temperatures as high as 104 degrees F. Before planting gladiolus, use a soil thermometer to check the temperature at a depth of 6 inches.

What month do you plant gladiolus bulbs?

Gladiolus corms should be planted in the spring, two weeks before the last estimated frost date. Plant your Glads every two weeks until early July to enjoy blooming throughout the season. The planting and flowering seasons will be staggered as a result. Grow early, mid, and late-season Gladiolus variants to lengthen the flowering season.

How long does it take gladiolus bulbs to sprout?

The corms are fully evolved and mature, and they are ready to be planted. They bloom the first year after sprouting in three to five weeks.

So there we have it folks that’s our article on gladiolus bulbs. If you like this article please share it with your friends and family and if you have any questions or comments post them in the comments box below. Happy gardening!

I am Fenil Kalal. Professionally I have done Engineering in Information and Technology. Gardening is my passion/love/favorite hobby and I have 5+ years of experience in Gardening.

Leave a Reply

Your email address will not be published. Required fields are marked *