You can kill them with several sprayings of a soapy water solution. 25 cm between rows. They like well drained soil with plenty of compost or manure. You can also plant them in the spring time, but they will not grow as large. Tomatoes Cut off the lower 2 or 3 layers of branches and bury them under ground when planting.
Roots grow to replace the broken off branches and the amount of resulting fruit is amazing.