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Growing Sweet Peas on an Obelisk

Sweet peas are an amazing flower to grow, both for their fabulous look and gorgeous scent. but if you have ever grown sweet peas before then you will know that they need plenty of support. But can you grow sweet peas on an obelisk? Let’s find out.

Sweet Peas on Obelisk

Can you grow sweet peas on an obelisk?

Yes, you can grow sweet peas on an obelisk. Sweet peas need something to grow up and an obelisk provides all the support they need.

Any obelisk will work just fine but be aware that you will probably need to tie your sweet peas in at first. Use twine or a twist tie to attach them to the structure.

Just make sure that you do not fasten the ties tight as this could damage the plant. You can leave it pretty loose, it just needs to hold the sweet pea in roughly the right place.

Over time the plant will do the rest and attach itself to the obelisk using its tendrils. If you are thinking of other ways to support your sweet peas then have a look at my sweet pea support ideas. Or read my post about growing sweet peas on a trellis.

Great Price!
Large 2M Black Metal Garden Obelisk
£12.99
  • Designed To Support All The Climbing Plants & Vegetables
  • Portable So Can Be Placed Anywhere In The Garden.
  • Penetrates 40CM into the Ground Giving It Stability And CAN BE Taken Out And Inserted Again


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05/19/2022 12:11 am GMT

Why not try growing your sweet peas in pots with an obelisk placed in the middle to provide some vertical interest to your garden.

More on Sweet peas

sweet peas, (Lathyrus odoratus) are a flowering plant belonging to the legume family. They are an annual flower that loves to climb and spread, in the right conditions and with the correct support they can grow to 2 and a half meters tall!

Mixed colours of sweet pea flowers
Mixed colours of sweet pea flowers

Unlike many other legumes which are grown to be eaten, sweet peas are grown for purely aesthetic reasons. There is evidence to suggest that the pea seeds from a sweet pea plant are actually toxic to humans and not fit for consumption even if this was desired.

Sweetpea FAQ’s

Are sweet peas perennial?

No sweet peas are an annual plant, they will not come back year after year.

Can you eat sweetpeas?

No, sweet peas are grown purely for their looks. Unlike many other legumes, they are actually toxic to humans if consumed.

Are sweet peas poisonous to pets?

Yes, as they are poisonous to humans they are also poisonous to pets, so make sure you keep an eye on your pets when they are hovering around sweet peas.

How high can sweet peas grow?

With the proper support, sweet peas can grow to 2m or even slightly above!

When do you grow sweet peas?

The traditional season for sweet peas is June and July but with the right care and attention, they can be both started earlier and grown later into the season. Regular deadheading of sweetpeas can massively prolong their flowering period.

How to germinate sweet peas?

I like to soak my sweet pea seeds in water for 24 hours before planting them in a seed tray. This soaking helps to break down the tough shell around the seed allowing them to germinate better.