Bamboo With their towering height and lush foliage, these bamboo plants are sure to make a statement and impress anyone who sees them. Rare & Fast Growth! Growth rate: known for its fast growth rate (generally around 3-5' per year), and can reach heights of up to 30 feet in just a few years under ideal growing conditions.Germination rate: Can vary depending on a number of factors, including soil temperature, moisture levels, and seed quality. However, with proper care and attention, you can expect a germination rate of around 70-80%.Room temperature for growing: Phyllostachys bamboo prefers warm, humid environments with temperatures between 60 and 90 degrees Fahrenheit. For best results, it's recommended to keep the soil consistently moist and to provide the seeds with plenty of light and warmth.