Information
Lathyrus Odoratus
Also known as Sweet Peas.
Type - Hardy annual, Hardy annual climber
Border position - Climber
Soil type - Fertile, Neutral
Site - Full Sun
Spacing - Two plants to a vertical support, 15cm apart
Sowing
There's lots of advice to place seeds in a damp cloth in a warm place to soften their seed coat, or soak them in water for a couple of hours before you sow and once they start to swell or sprout they are ready to be planted. Personally, I have never done this (!) and always had fantastic germination from my Sweet Peas.
Sow October - December or from January - March, two seeds in to one root trainer or pot, if sown in Autumn keep them in a light, cool place during Winter.
Make sure you keep seeds and seedlings well away from mice - I use the top shelf in my greenhouse.
Pinch the Sweet peas when they are 10-20 cm tall - this simply means to pinch their main stem just above a leaf node. Feels harsh but this is the way to make sure you have bushy plants with more flowers.
Flower May - August if sown in Winter, June - September when sown in Spring, flower 12-14 weeks after spring sowing of seeds.
Flowering
Will grow 180-200cm high so make sure you have something for them to climb up - that could be a trellis, some netting or a bamboo wigwam.
Many have a beautiful scent for bouquets and the more you pick the more they produce!
They will also produce seeds that you can gather at the end of the season.
Grandiflora sweet peas tent to grow more spread out along the stem, Spencer varieties will grow with less flowers, more clustered towards the top.
Problems
The seeds can attract mice so keep them up high and with rodent-proof coverings if possible - otherwise these are simple to grow and should be a staple part of your cut flower garden.
FAQs
How do I sow and grow Sweet Peas?
Greenhouses and my set-up: click here to read
Root trainers shown in the video above: click here see on Amazon
Plant labels shown in the video above: click here to see on Amazon
Deep pots when sweet peas are ready to be potted on: click here to see on Amazon
