Lobelia Seeds

Why Choose Lobelia Seeds?

Brighten up your garden by planting some lobelia seeds! Lobelias have small & delicate blooms with form a lush carpet of flowers in your beds or planters, creating a sea of blues, purples, whites, and reds.

Lobelia seeds are incredibly versatile and can be used all over your garden. They thrive in borders, accessorising your garden edging with their vibrant colours, or amongst other plants in raised beds. Lobelia can also be part of beautiful mixed flower arrangements in planters or hanging baskets, where its dramatic trailing nature cascades over the edges.

How to Plant Lobelia Seeds

You can start your lobelia seeds inside 8-10 weeks before your last frost date, or in the greenhouse. Lobelia seeds are tiny, so fill your seed trays or small pots with a light potting mix before sprinkling the seeds evenly over the surface of the soil. As the seeds are so small, they need light to germinate, so don’t cover them with soil – instead, lightly mist the surface with a garden sprayer or spray bottle so they don’t wash away! Cover your trays or pots with cling film or a plastic lid to keep the humidity in.

Once you have little lobelia seedlings, remove the cover, and pop them on a sunny windowsill to grow further, keeping the soil moist. You can start ‘hardening off’ the seedlings once your last frost date has passed, which means gradually getting the seedlings used to the cooler outdoor environment. Plant them into rich, well-draining soil – they don’t mind some dappled shade. Keep your garden well-watered in dryer periods to keep your garden healthy, especially any plants in pots!

FAQs

When should I start lobelia seeds indoors?

You can start lobelia seeds indoors around 8-10 weeks before your last frost date.

Do lobelia plants need full sun?

Lobelias are pretty happy in cooler temperatures, so pop them in a sunny or partly shady spot to protect them from intense midday sun.

Can lobelia be grown in hanging baskets?

As lobelias are trailing plants, they’re perfect for hanging baskets and create a lovely look!

Why are my lobelias not blooming?

It may take a while for your lobelia to bloom, but poor blooms could be a result of insufficient light, underwatering, or lack of nutrients in the soil. Try to get to the bottom of the cause and give them some plant food to give it some energy!

How long do lobelia seeds take to germinate?

Lobelia seeds take about 10 to 21 days to germinate. Ensure they’re acclimatised to an open, sunny spot before planting.

Is lobelia difficult to grow from seed?

Lobelia is easy to grow from seed compared to many other annual flowers.

Does lobelia grow back every year in the UK?

Yes, you can always look forward to your lobelia flowers growing back to life in every new spring.

Do lobelia reseed themselves?

Yes, lobelia flowers can regrow each spring.