However, one of the ongoing problems with the red flowering gum has been that it’s always been grown from seed in the nursery industry in the past. It was able to flower after five to ten years. The colorvary increased greatly because of the high genetic diversity within this species. Not only does the colorvary, but the height of the tree can vary from a 10-15 meter substantial tree to a mallee form that’s no more than a couple of meters in height – a form which does have its advantages in the smaller gardens of today. Red flowering gum, which is more predictably and easier to grow in garden cultures has been one of the most exciting advances in horticulture. (Finalized by Gregoria Olivas February 25, 2020) 🔥 
The following was published on 27 November 2016. Planted two new sets of Corymbia ficifolia seeds. Rock wool is a fibrous, sponge-like material that has no soil nor nutrients. One set was placed in it. The best looking seeds were those with no bulges. Four subsets were created from 24 seeds. Each subset had water at a different pH level, with pH = 5, 6, 6.5, and 7.0. The phosphoric acid was used to achieve the desired pH, and also supplied some phosphate to sprouting seeds. We employed a heating pad with a thermostat in the soil at 25°C, held constant 24 hours a day. For 16 hours a day, the lights were switched on. Clear plastic domes were placed over the trays to retain heat and moisture. We can also measure the effects of pH ranging from 5.5-6.9 on seed germination. The seeds will remain steady while we do this experiment. Temperature 24 hours a day and humidity all the time. 
According to the professionals from baag.com.auThe high level of genetic variation has enabled breeders to choose strains for their size and flower colours. They can also be grafted with the same characteristics. There are many varieties of flowering gums available, each with its own unique characteristics. They come in a wide variety of colors and heights. Many of these have a round crown with a mushroom shape and dense crowns. These flowering gums have been able to withstand the humid climate in Sydney and northern Australia by hybridizing with Corymbia Ptychocarpa (“Bloodwood”) Grafted forms of these are currently in the named ‘Summer’ series: Summer Beauty, Summer Red etc. They tend to produce slightly bigger flowers. This was modified by Gina Upton February 15, 2021 
Gum is one of the most popular trees for producing They are a beautiful flowering tree with a great height for shade or street trees. You can get them in many colors, including red, pink, orange, white and even two-toned. The height ranges from 2m mallee to 15m trees. You will want to have a specific colourr and height. If not, you can get one from the beautifully grafted, named forms. But, seedling-grown plants are also available. The large, spherical gum nuts should be removed as soon as possible to avoid tripping hazards. However, this inconvenience can make a difference in the beauty of the flowers, as well as the attraction for nectar-loving wildlife. As humidity can cause problems for these flowers, it is best to keep them in the South. Treniece Dodd (Porto, Portugal) for the feedback.