How Many Times a Year Does the Perfume Rose Bloom? A Detailed Guide to Its Blooming Cycle

The rose's blooms are a striking red and captivating, with a rich floral fragrance, and people often use it as a metaphor for beautiful love. In addition, it has quite a few varieties, among which the perfume rose is relatively common, mainly used to extract rose essential oil for perfumes, applied in cosmetics, fine chemicals, and other industries. So, how many times a year does the perfume rose bloom?

1. How many times a year does the perfume rose bloom?

The perfume rose blooms once a year, but if it is well cared for, it can also bloom twice. The blooming period is generally from May to June, and the exact blooming time is related to when it was planted.

2. Propagation methods for the perfume rose

1. Sowing

This is generally used only to cultivate new varieties. Place seeds collected in autumn into a plastic bag filled with moist sandy soil, and keep it in an environment where it freezes at night and thaws during the day. After about 1 month, gradually raise the temperature to around 20°C. Once the seeds crack open and germinate, they can be sown (or stored in sand until sowing the following spring). When the seedlings grow 3-5 small leaves, transplant them separately.

2. Cuttings

Softwood cuttings with a heel: in early spring, select newly sprouted branches, use a sharp knife to cut them off at the base with a little wood attached, treat them with a growth hormone, and insert them into a cutting bed or small pot.

Semi-hardwood cuttings: in June to September, select branches from roses whose flowers have just faded, cut off the flower stalk, trim the lower part flat, take 2-3 nodes as one section, remove the lower leaf, and also cut off unhealthy and tender leaves. After treating with a growth stimulant, insert them into a bed with the same conditions as the method above.

Hardwood cuttings: take one-year-old plump branches cut before overwintering, make sections of 2-3 nodes each, tie every 10 cuttings into a bundle, dig a 30 cm pit in a low-temperature greenhouse, and bury the cuttings upside down in moist sandy soil with 5-10 cm of soil covering the top (keep it from drying out). In early spring of the following year, insert the cuttings into a cutting bed.

Hardwood water rooting method: select semi-hardwood or hardwood branches with 1-2 leaves, trim the base flat with a sharp knife, and insert them into a water-filled container so that half of the branch is submerged. Place it in a spot at 15°C-20°C with sunlight so that it grows roots. During the rooting period, change the water in the container every 2-3 days. When the skin of the new roots on the branch turns pale yellow or light brown, take it out and carefully plant it in a nutrient bag to grow.

3. Grafting

Bud grafting: every 5-9 days, select plump buds from a superior mother plant and cut them off, then graft 1-2 buds onto a 'Baiyutang' or rose rootstock. Alternatively, on one long branch of the rootstock, graft one bud every 8-10 cm. After the grafts take, cut the branch into sections, each with one successfully grafted bud, and insert them into a sand bed or container in the same way as ordinary cuttings.

Stem grafting: each spring, use cut grafting, whip grafting, or side grafting to graft branches of superior varieties onto rose or 'Baiyutang' rootstocks.

Root grafting: during the dormant period of the rose in winter and spring, indoors, attach the scion to one root of a rose or 'Baiyutang', tie it firmly, then heel it in at the bottom, keep it in a moderately warm greenhouse and maintain moisture. After the graft union heals, pot it up or plant it in place.

4. Layering

Ground layering: during the rose's growing season, notch the branch below a bud, bend it and bury it in moist soil with the tip of the branch left sticking out above the soil. When new roots grow from the notched part buried in the soil, it can be cut apart and planted separately.

Air layering: on a rose branch, choose a suitable spot, notch the branch or remove a 1-1.5 cm ring of bark, and around the peeled area wrap a ball of soil 6-8 cm in diameter with a bamboo tube or plastic sheeting. Keep it moist at all times. After about 1 month, new roots grow from the wound; cut it off and plant it in a seedbed or flower pot.

5. Division

Generally, the rose can be planted somewhat deeply or have soil mounded around its base to encourage new roots to grow from the base of each branching stem. When repotting, cut apart the side branches that have grown new roots to form a new plant.

The rose is a relatively easy flower to grow and has high ornamental value. Keeping one or two potted roses at home can not only add a touch of color to the home, but also fill the whole room with fragrance.