Lobelia 'Hot Water Blue Improved' — Half-Hardy Annual, 10.5cm Pot (Set of 3 or 6)

Lobelia 'Hot Water Blue Improved' — A bright bedding plant. Supplied as a set of 3 or 6 well-rooted plants in 10.5cm pots, grown peat-free at our Yorkshire nursery and ready to plant out.

At a glance

• Type: Half-Hardy Annual
• Position: Full Sun to Light Partial Shade
• Supplied as: Set of 3 or 6 plants in 10.5cm pots

The detail

Trailing lobelia produces masses of tiny, fan-shaped flowers held closely together along flexible, cascading stems, creating a soft waterfall of colour for baskets and containers. Available in deep blue-violet, vivid purple-blue, refreshing water-blue, and pure white, each bloom features the classic lobelia form with three flared lower petals and two smaller upper petals, often highlighted by a pale throat. Though individually small, the flowers appear in such abundance that they form dense, flowing curtains of colour.

Supplied as large, well-established 10.5 cm rootballs, these plants are ready to plant straight outdoors and establish quickly. Grown in peat-free compost, they’re easy to maintain and perform reliably throughout the warmer months. Ideal for hanging baskets, window boxes, and raised containers, trailing lobelia offers high impact with minimal effort, making it suitable for both beginner and experienced gardeners.

Why ours

Grown by us in Yorkshire, in peat-free compost, shipped in plastic-free packaging. Every plant arrives strong, well-rooted and ready to thrive — not weeks of waiting before it gets going. Each order includes access to our free care app with planting and seasonal care reminders.

How to grow

Frequently asked

What size pot does it arrive in?

Sets are supplied as 3 or 6 individual plants in 10.5cm pot, well-rooted and ready to plant out or pot on.