What are the reasons why roses don't bloom? The latest analysis is here
Most roses are world-famous ornamental plants, widely distributed across the cold temperate to subtropical regions of Asia, Europe, North Africa and North America. In China they represent love, and many ancient civilizations around the world also regard the rose flower as a symbol of truth, goodness and beauty. China rose and rugosa rose are its representative plants, but many flower growers find that the roses they cultivate do not bloom. Let's take a look below at the reasons why roses don't bloom!
When do roses bloom?
The flowering period of roses is generally from May to September each year, opening in succession and lasting up to half a year. However, in recent years, global warming caused by the greenhouse effect has made roses in some places begin to bloom as early as April, or even March. Therefore, flower lovers who want to enjoy the blooms should grasp the timing well so as not to miss the viewing period.
Reasons why roses don't bloom
1. Insufficient light, so flower buds cannot differentiate. Roses are strongly sun-loving flowers, preferring moist soil that does not waterlog, and growing well under high temperature and high light conditions.
2. The plant is too small, or heavy watering causes the branches to grow leggy. Leggy growth makes all the nutrients go to the growth of branches and leaves, leaving no capacity to supply what flowering needs. Controlling watering and thinning the branches and leaves to increase ventilation and light penetration among them can make roses bloom abundantly.
Raising and care management of roses
1. Fertilization management: Roses like fertilizer and also tolerate poor soil. In March, apply 1 to 2 times a nitrogen-based liquid fertilizer to promote the growth of branches and leaves; from April to May, apply 2 to 3 times a fertilizer mainly of phosphorus and potassium to encourage more buds and more flowers; after flowering, apply one more rejuvenation fertilizer, after which no further fertilizing is needed. Roses are sun-loving flowers that like warmth and also tolerate cold; in North China and areas to its south, they can overwinter safely outdoors.
2. Watering management: Roses like moisture but fear wetness and are averse to waterlogging. From sprouting to before flowering, water a little more as appropriate, to the degree that the soil is moist but not waterlogged; after flowering, do not water too much, and let the soil alternate between dry and wet; in the rainy season, pay attention to drainage to prevent waterlogging.
3. Pruning and trimming: Roses have strong sprouting ability and grow luxuriantly. If not pruned in time, under conditions of muggy heat, humidity, insufficient light and poor ventilation, they are prone to pests and diseases, so pruning should be done once after flowering. When pruning, you may select healthy semi-lignified branches of the current year for cuttings, place them in half shade, and after they take root, transplant and set them out the following spring; alternatively, before sprouting in early spring, cut off the suckering offsets at the roots together with their roots and plant them separately.