How to increase growth speed in sunflowers?

Question

Does plant food and constant light help?

Florescent or incandescent light?

Answer 1

To grow well, sunflowers need full sun. They grow best in fertile, moist, well-drained soil with a lot of mulch. In commercial planting, seeds are planted 45 cm (1.5') apart and 2.5 cm (1") deep.

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