Zucchini 'Onyx'

Cucurbita pepo var. cylindrica

How to grow Zucchini 'Onyx'

  • Full Sun

  • Medium

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Onyx is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Onyx tends to grow best in a soil ph of between 5.6 and 7.5 meaning it does best in weakly acidic soil - weakly alkaline soil.

Growing Onyx from seed

Try to aim for a seed spacing of at least 2.92 feet (90.0 cm) and sow at a depth of around 0.99 inches (2.54 cm). Soil temperature should be kept higher than 15°C / 59°F to ensure good germination.

By our calculations, you should look at sowing Onyx about 21 days before your last frost date.

Transplanting Onyx

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Onyx is a tender plant.

By our calculations, you should look at planting out Onyx about 0 days after your last frost date.

Harvesting Onyx

This variety tends to be ready for harvesting by mid summer.