After a long period of collection, 40 brief introductions of large-flowered rose varieties have been sorted out. I hope they are what you want.
Flower diameter 8 cm, double petals (17-25 petals), multi-color (* + yellow), medium fragrance, repeated flowering in many seasons. The plant is about 100 cm tall.
Features: Very diligent flowers, heat-resistant, rich and changeable flower colors (the flower colors are pink and yellow stripes alternate. When the temperature is high, the flower colors will fade or even disappear. Once the temperature turns cool, its flower colors will recover, the stripes become obvious and the flowers become full). The plant has good upright properties.

Flower diameter 10-12 cm, double petals (90-100 petals), pure white, rich lemon fragrance, repeated flowering in many seasons. The plant is about 80-120 cm tall.
Features: Steamed bun flower shape, pure white flower color without variegation, very pure and with strong lemon fragrance. Flowers can be cut and kept for a week for flower arrangement. The plant grows quickly, the branches are thick, and it is also a great cut flower variety.

Flower diameter 8-10 cm, double petals (90 petals), salmon pink color, rich lemon fragrance, repeated flowering in many seasons. The plant is about 120 cm tall.
Features: Strong disease resistance, good branching, good flowering, cup-shaped flower shape, rich flower color (salmon pink with light yellow on the back) and strong lemon fragrance. It is a large-flowered rose variety named to commemorate the 50 th anniversary of Queen Elizabeth of England.

Flower diameter 10 cm, double petals (74 petals), purple red, strong fragrance, repeated blooming in many seasons. The plant is about 80-100 cm tall.
Features: Elegant and changeable flower color (when it first opens, it is light crimson and cup-shaped, then the flower core gradually turns into velvety crimson, and the petals gradually unfold), rich and peculiar flower fragrance (strong mixed fragrance of roses, fruits and red wine), shiny leaves and good disease resistance.

Flower diameter 10 cm, double petals (83 petals), apricot yellow, strong fragrance, repeated flowering in many seasons. The plant is about 70-80 cm tall.
Features: Large flowers, cup-shaped flower shape, tight and full, many petals and beautiful colors. Floral and pleasant (intense fruity aroma mixed with honey aroma).

Flower diameter 8 cm, double petals, dark red, strong fragrance, repeated blooming in many seasons.
Features: Large flowers, multi-headed flowers, bun-shaped flower shape, petals with serrated edges (like peony) and faint stripes. The flower branches are not particularly hard, and it is easy to hang their heads when the flowers are large. Very resistant to heat and sun.

Flower diameter 15-18 cm, double petals (40-45 petals), vermilion, light fragrance, repeated blooming in many seasons.
Features: The flowers are particularly large, bright in color, with slightly curled petals (some orange on the outer edge), and they are relatively resistant to blooming (the flowering period of single flower is 8-10 days). The branches of the plant are thick, upright, and easy to propagate. It is a flower with ornamental value in both flowers and leaves (the leaves are green and shiny, and the young leaves, thorns and shoots are dark red).

The flower diameter is 6-8 cm, double petals, slightly fragrant, and blooms repeatedly in many seasons.
Features: Large flowers, pointed petals, and retro and changeable flower colors (the flower color is purple with a little orange and pink, and the flower color also changes with the change of temperature. It is lighter when it is hot and darker when it is cool, so the same sunflower often blooms purple and purple-pink flowers).

Flower diameter 9 cm, double petals, yellow, medium fragrance, repeated flowering in many seasons.
Features: New variety, with large flowers, loose flower shape, petals with very slender ruffles, blooming just like chrysanthemums, very special. Yellow flower color with a hint of red edge. The plant has good upright properties.

The flower diameter is 15 cm, double-petaled, pink, medium-fragrant, and flowers repeatedly in many seasons. The plant height is about 120-280 cm.
Features: Ancient variety with large flowers and loose petals, especially like peony, very luxurious appearance. The plant is tall, has a certain vine nature, and the whole plant has no thorns.

The flower diameter is 10-13 cm, double petals, yellow, and flowers repeatedly in many seasons. The plant is about 50-80 cm tall.
Features: Large flowers, rich changes in color (the initial color is goose yellow, but gradually becomes bright yellow when it blooms), full flower shape, sun and rain resistance.

The flower diameter is 8-10 cm, double petals, pink and yellow, light fragrance, and blooms repeatedly in many seasons.
Features: Diligent flowers, with bright red and delicate yellow petals (and the outer petals are darker and the inner petals are lighter), which is very layered, and the petals will appear stripes in low temperature seasons. The flower pattern is not only beautiful but also lasting, and the whole plant also has the effect of purifying the air, which is very sought after.

The flower diameter is 12-14 cm, double petals (40-50 petals), red and white mixed colors, strong fragrance, repeated flowering in many seasons.
Features: Pleasant aroma (the flowers are fully blooming and the fragrance is the best). It has won many awards such as AARS Award, Gold Award in Rome, Italy, the most beautiful and fragrant rose award in Baden, and the most fragrant rose award in Geneva. The flowers are large, rich and gorgeous in color, and are very changeable (the outer petals are pink, the inner petals are milky white, and there is only a little red cover on the edge of the petals at the beginning of their blooms. With the opening of the flowers, the red part gradually expands, and finally almost covers the whole petals).

The flower diameter is 12 cm, double petals (35 petals), golden yellow, slightly fragrant, and flowers repeatedly in many seasons.
Features: Large flowers, diligent flowers, golden yellow petals are rich in luster. The branches are well branched, thick and upright, the leaves are dark green and shiny, and the disease resistance is good.

Double petals, light pink, strong fragrance, repeated flowering in many seasons. The plant is about 120-200 cm tall.
Features: Diligent flowers, sun-resistant, firm flowers, showing a half bun shape when fully opened. The petals are textured and have a very pleasant strong lavender flavor.

The flower diameter is 7-8 cm, double petals (17-25 petals), yellow and red stripes, and flowers repeatedly in many seasons.
Features: Long flowering period, long-lasting flower shape, and the petals roll outward in the later stage, with edges and angles. The flower color is particularly prone to mutation (it can produce a variety of yellow and red striped flowers, even black and red solid flowers), and it has the name of the Prince of Mutation.

Flower diameter 10 cm, double petals (130 petals), pink, strong tea fragrance, repeated blooming in many seasons.
Features: Large flowers, long flowering period, deep cup-shaped flower shape, round and full plant shape.

Flower diameter 10 cm, double petals (50-55 petals), white, faint tea fragrance, repeated blooming in many seasons.
Features: Large flowers, beautiful flower shape (tall cup flower shape), pure white petals will curl and turn red in the later stage. The plants have good sun resistance, good disease resistance and strong upright properties.

Flower diameter 7-10 cm, double petals, apricot or apricot pink mixed color, strong myrrh fragrance, repeated blooming in many seasons. The plant is about 80-100 cm tall.
Features: Large flowers, smart color (apricot inside, darker in the early stage, pink and white in the later stage). It grows fast, is heat and shade resistant, and has a special floral fragrance.

Terracotta Warriors Hotel
The flower diameter is 5-9 cm, double petals, purple-pink, and flowers repeatedly in many seasons. The plant is about 40-70 cm tall.
Features: Frequent flowers, with wavy petals, changeable flower colors (the lower the temperature, the darker the flower color, the clearer the petal lines), good upright flowers, lush branches and leaves.

Flower diameter 8-10 cm, double petals (35-40 petals), orange yellow or golden yellow, light fragrance, repeated blooming in many seasons.
Features: Frequent flowers, abundant flowers, long flowering period, gorgeous colors, cup-shaped high curl-core flower shape, hard petals, resistant to rain and sun, and very resistant to blooming.

Flower diameter 8-10 cm, double petals (60-70 petals), bean green, medium fragrance, repeated flowering in many seasons. The plant height is about 150 cm.
Features: Long flowering period (the flowering period of single flower can reach about one month from blooming to failure), cabbage cauliflower type, rare and changeable flower color (light bean green at the beginning, flower color will gradually fade with time, and light white bean green at the later stage). The branches are upright.

The flower diameter is 10 cm, double petals (72 petals), purple-black, medium-fragrant, and flowers repeatedly in many seasons. The plant is about 120 cm tall.
Features: Large flowers, velvety petals, rich colors (dark purple red on the front and light yellow on the back), and the whole flower is very dignified and atmospheric.

The flower diameter is 12-14 cm, double petals (30 petals), dark red, mild tea fragrance, repeated blooming in many seasons. The plant is about 120 cm tall.
Features: Frequent flowers, very large flowers, large flowers, tall cup-shaped flower shape, gorgeous colors, very good disease resistance, low difficulty in planting and easy care.

Flower diameter 12 cm, double petals (27-30 petals), orange-red/coral-red, strong tea fragrance, repeated flowering in many seasons. The plant is about 50 cm high.
Features: The flowers are very large, the strong tea fragrance has won many international awards (NRS Award in 1964, Portland Gold Award in 1966), is cold and sun resistant, and has strong adaptability.

Flower diameter 8-10 cm, double petals, pink, strong damascus and lemon fragrance, repeated blooming in many seasons. The plant height is about 120-150 cm.
Features: Cup-shaped flower shape, vigorous growth, strong disease resistance, flowering in all seasons.

The flower diameter is 10-12 cm, double petals, red, and flowers repeatedly in many seasons. The plant is about 100-120 cm tall.
Features: The color of the flowers is very characteristic, with a mixture of red, accompanied by stripes.

The flower diameter is 13-15 cm, double petals (25-30 petals), light blue-purple, strong fragrance, repeated blooming in many seasons. The plant is about 150 cm tall.
Features: Large flowers, compact petals, high-heart curled flower shape, long flowering period, good branch upright.

Flower diameter 8-10 cm, double petals (17-25 petals), dark red, old rose fragrance, repeated blooming in many seasons. The plant is about 80-120 cm tall.
Features: Cup-shaped flower shape, sun-resistant and shade-resistant, the flower takes a long time from bud to opening, and the flower color is changeable (it is dark crimson when it first opens, and gradually turns dark red).

The flower diameter is 8 cm, double petals (60 petals), red, yellow and white, light fragrance, and blooms repeatedly in many seasons. The plant height is about 120-180 cm.
Features: The flower color is red and yellow striped and changeable (the color will be lighter in hot season and late opening period), and the color of each flower is different. The plants are tall and vigorous.

Double petals, dark pink, strong fruity fragrance, repeated flowering in many seasons. The plant is about 150 cm tall.
Features: Long flowering period, very large flowers, petals wrapped inward in a globular flower shape. The plant has few thorns, thin branches, thin leaves, good disease resistance and fast growth rate.

Flower diameter 4-5 cm, double petals, orange-red, medium lemongrass (lemongrass) fragrance, repeated flowering in many seasons. The plant is about 100-120 cm tall.
Features: Abundant flowers, diligent flowers, good branching, pruning resistance, orange-red gradient of flower color and petal distortion (the distortion of petals will disappear at high temperature) make the whole flower very layered.

Flower diameter 12-18 cm, double petals, red, strong fragrance, repeated blooming in many seasons. The plant is about 150-180 cm tall.
Features: Large flowers, bright color, rich fragrance, disease resistance, sun resistance and good branching.

Flower diameter 8-10 cm, double petals, rouge pink, strong apricot, peach, citrus fruit fragrance, Damascus flower fragrance, repeated blooming in many seasons. The plant is about 80-120 cm tall.
Features: Diligent flowers, the flowers are very elegant and beautiful, accompanied by rich apricot, peach, citrus fruit fragrance and Damascus flowers. Very sun-loving.

Flower diameter 10 cm, double petals (35 petals), red-purple, faint tea fragrance, repeated blooming in many seasons. The plant is about 80-100 cm tall.
Features: Diligent flowers, durable flowers, and changeable colors (it is lavender and blue at first, and then gradually turns red and purple). The old leaves are dark green and shiny, and the young branches and leaves are purple.

Flower diameter 10 cm, double petals (26-40 petals), orange, faint apple fragrance, repeated blooming in many seasons. The plant is about 180 cm tall.
Features: Frequent flowers, multi-head flowers, and very gorgeous colors. The plant is tall, with good disease resistance, soft branches, more thorns and average upright.

The flower diameter is 8-10 cm, double petals, light apricot color, strong fragrance, and blooms repeatedly in many seasons. The plant is about 80 cm high.
Features: Large flowers, rare flower color (light apricot with a little pink, and a little like light coffee). Growth is weak.

Flower diameter 12 cm, double petals (35-40 petals), purple-red, strong fruity fragrance, repeated flowering in many seasons.
Features: High-core curled flower pattern, flower color close to blue.

The flower diameter is 10 cm, double petals (80 petals), dark red, mild and fragrant, and flowers repeatedly in many seasons. The plant is about 150 cm tall.
Features: Frequent flowering, multi-headed flowering, with a large number of petals, arranged around the stamens in an orderly manner. Dark red flowers, sometimes with purple flowers.

Flower diameter 20 cm, double petals, pink, pure old rose fragrance, repeated blooming in many seasons.
Features: The flowers are super large (flower diameter 20 cm, the largest variety with flower diameter so far), grow quickly, have good disease resistance and are very cold resistant.

To tell you the truth, I was amazed by this issue of the big flower rose. What about you?