Chang has also developed a "tall pot" that enables orchid leaves, which usually lie flat, to grow at a 45-degree angle. This angle, which doesn't affect photosynthesis, makes watering easier and inhibits the transmission of diseases. It also saves space in the pot, making it suitable for use with the "two plants per pot" technique.
張能倚還自行研發出「高套盆」，讓原本平躺的蘭葉以 45 度角成長，不但不會減少光合作用，還有澆水容易、疾病不易傳染等好處，節省的盆內空間剛好可供「一盆雙株」之用。