Everything you wanted to know about Nasturtiums! - Knowledgebase Question

San Antonio, Te
Question by Bumstear2
May 8, 2009
1. How to start from seeds?
2. Ideal cultivation and growing conditions?
3. Adult plants have irregular, circular areas. This must be caused by a sucking pest. How do I stop this?

Answer from NGA
May 8, 2009


Sow Nasturtium seeds 1/2 inch deep and 10 to 12 inches apart. They usually sprout in 7-10 days. Nasturtium plants grow very well in poor soils, and like dry soils. So you can plant these versatile flowers in areas where other flowers and vegetables would fare poorly.

There are two types of Nasturtium, a regular plant which grows 6 to 10 inches and vining type which will grow to about 15 inches. Nasturtiums are a flower that begs to be ignored. Grow them in poor soils and if anything, keep the soil dry. Don't bother with mulch, compost and fertilizers. They do like full sun, but will tolerate partial shade.

I think the holes are a result of caterpillar feeding. Look on the undersides of the leaves for small caterpillars. Most other insect pest shun the leaves, with the exception of aphids - they are easy to see because theire populations grow large almost overnight.

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