Lathyrus pubescens will flower in the first year from an early sowing and make a decent show, but flower spikes will be both larger and more numerous in subsequent years.
It is distinct from other blue flowered South American Lathyrus species, with thinner stems, smaller leaves and a greater tendency to climb rather than sprawl. Given suitable support, Lathyrus pubescens will generally climb to about 5 or 6 feet, 1.5 to 2.0 meters. It has a pronounced fragrance, which is quite different to that of Lathyrus nervosus.
The small brown seeds have a hard seed coat, and germination will be greatly improved if the seed coat is abraded imediately prior to sowing. More detailed information about Lathyrus pubescens and other Lathyrus species may be found on the lathyrus.info website.