Morning glories cross-pollinate, meaning that plants grown from seed will not necessarily look much like the parent once they grow. [3] X Research source

Depending on your local conditions you may be able to plant in late summer if you tend to have mild winters. If it gets cold in September, you probably shouldn’t plant. If storing seeds over the winter, keep them in a dry, dark location.

Some gardeners argue that soaking can cause rotting or infection, and that shallow planting in moist soil will produce similar results with less risk. [6] X Research source

Do not mix sand with clay-heavy soil. There’s no need to grow these in extra-rich, fertile soil. Rich soil can even lead to fewer flowers in some morning glories, notably “Heavenly Blue” and other Ipomoea tricolor varieties.

If planting them directly in a garden plot, spacing depends on the variety’s size and on personal preference. Consider planting the seeds 2 inch (5cm) apart, then culling to 6–12 inches (15–30cm) apart once the seedlings reach 3 inches (7. 5cm) high. [9] X Research source At this height, the seedlings are well-established and less vulnerable to pests. [10] X Research source

Keep indoor plants near a south-facing window (or a north-facing window if you live in the Southern Hemisphere). The ideal soil temperature for germination is about 68–86ºF (20–30ºC). [11] X Research source

Keep the soil moist during this acclimation period.

Alternatively, plant seedlings in a hanging basket and allow the vines to cascade over the edge.

Over-watering can lead to excessive vine growth with few flowers.

Since most morning glory vines die every year, allowing your morning glory to climb living trees is acceptable as the vines will not harm the tree. (Don’t try this in areas with mild winters, which morning glories can survive. )

Air temperature will alter the color of the bloom and the length of time it stays open. [14] X Research source [15] X Research source

In warm climates where morning glories grow as perennials, you can grow new plants from short cuttings instead.