Cultivation of Butternut Squash
Plants will grow very quickly in sunny conditions. Water generously in dry spells, particularly when fruit forming – plants are shallow rooted, so thorough watering 1-2 times per week is better than occasional soaking. If possible, water must be concentrated at centre of plant, though trailing stems often make own short roots which also take up water & nutrients.
Cultivation of Sweet Potatoes
The plant does not tolerate frost. It grows best at an average temperature of 24 °C (75 °F), abundant sunshine and warm nights. Annual rainfalls of 750–1000 mm are considered most suitable, with a minimum of 500 mm in the growing season. The crop is sensitive to drought at the tuber initiation stage 50–60 days after planting and is not tolerant to water-logging, as it may cause tuber rots and reduce growth of storage roots if aeration is poor.