They can also be started from plant cuttings grafted onto acceptable root stock. See- Grafting Fruit Trees.
Cuttings can also be rooted and planted as clones. See - New plants from Cuttings
A trellis or similar support such as a fence is advisable, it will not only keep the plant from sprawling across the ground by encouraging horizontal growth but it is also easier to maintain and harvest.
Full sunlight is best but partial shade is acceptable.
They are thirsty little water hogs and not advisable for drought plagued regions. Water daily for optimal results.
Most varieties are not self fertile and two plants - male and female are necessary to ensure pollination and fruit production. One promiscuous male plant can pollinate up to half a dozen females. A few hybrid varieties offered for sale will produce both male and female flowers and are self fertile.
In the plants second year, fertilize with a balanced 10-10-10 fertilizer. Apply twice annually . Apply a large dosage before growth commences and a diluted dosage after the fruit sets. No fertilizer in its first year is needed or advised other than compost or well rotted manure.
Flowering occurs in late spring of its 3rd year, occasionally the second. A Harvest in early Autumn can produce 85 - 100 lbs of berries from mature healthy specimens grown under optimal conditions. They are best left to ripen on the vine in order for the sugars to adequately concentrate, but can be harvested slightly earlier with some loss of quality.
They are susceptible to rots such as phytophthora, botrytis rot, and sclerotinia blight.
Spider Mites, thrips, aphids, and some beetles will also infest these plants in particular Japanese Beetle.
The plant contains an active ingredient "nepetalactone" a plant terpenoid that is found in higher concentrations in Catnip. It has an affect on the central nervous system of cats and they have been known to dig up the plants.