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Some species of Ipomoea are restricted or prohibited in specific states in the USA, as well as in other countries. Please see this thread for more information: http://davesgarden.com/community/forums/t/1024482/
Do I need to soak morning glory seeds before sowing them?
The seeds will often sprout just fine without any pre-treatment. For pre-treatment, soak the seed until it swells. Some people add hydrogen peroxide to the soaking water or nick the seed coat to help the seed germinate. This usually works out well for the most common species, but for some rare types/species soaking or other more specialized treatment may be recommended.
When should I sow morning glory seeds?
This can be species dependent as some species may respond better at different times of the season. The most common species can be winter sown, direct sown in Spring/Summer, or even started indoors.
Can I start morning glories inside?
This is species dependent. Making certain of an adequate light source is an important consideration when growing them indoors.
Should I pinch back seedlings?
This depends on the purpose and/or intended result for pinching back. Allowing the plants to remain un-pinched will produce a longer vine in less time for quicker coverage.
How do I save seeds from Morning Glories?
When seed pods are ripe they can be removed from the vine. Seeds will be colored brown, tan, beige, or two-tone.
They can be stored in a cool, dry place. Long term storage in a refrigerator may require some form of a desiccant as humidity is high and can foster some molds that grow well in refrigerators.
Will morning glories come "true" from seed?
Morning Glories of the same species can cross fertilize. To insure intra-fertilization with the same type, some type of isolation and/or hand pollination may be necessary.
Seeds that result from cross fertilization within the same species but of different cultivars or other types would most accurately be referred to as crosses and not hybrids. (Unless there were true inter-specific hybrids involved such as vines in the Youjiro series.)
What are "Japanese" Morning Glories?
Japanese Morning Glories are most commonly associated with large flowered Ipomoea nils, though the Japanese have enjoyed many different species including Ipomoea purpurea and others such as Ipomoea hederacea, etc. In fact the very popular Youjiro series are hybrids between Ipomoea nil and Ipomoea purpurea which may be viewed on Dr.Yoneda's website. (See Index listing for this site.)
Is there anything different about growing requirements for Japanese Morning Glories that should be noted here?
They are often not prolific seed producers so you may want to take extra care with seeds that may be in short supply and/or of relatively rare types. Seeds tend to sprout better in what is the natural/usual germination period during the Spring and/or in the early Summer for a specific geographic locality. It may be best to start during the natural germination time period for a specific geographic location and/or climate zone.
This message was edited Aug 8, 2009 9:09 AM
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