1 5

Lobelia Cobalt Blue Seeds for Garden Planting

Lobelia Cobalt Blue Seeds for Garden Planting

$16.49 USD
$16.49 USD
Sale Sold out

How to Sow and Plant

Sow seeds indoors 8–10 weeks before last frost

Use seed trays or pots with seed-starting mix

Scatter seeds on surface; do not cover (light needed to germinate)

Keep soil consistently moist, not waterlogged

Transplant outdoors after frost to garden/containers

How to Grow

Grow in full sun to partial shade
Plant in well-drained, fertile soil
Water regularly, keeping soil evenly moist
Feed lightly every 2–4 weeks during the growing season
Deadhead spent flowers to encourage more blooms

Tips

Mix the tiny seeds with fine sand for even sowing
Provide good air circulation to reduce disease
Avoid waterlogging soil
Effective for containers and hanging baskets

View full details
About
Product Information
Features
life-cycle

LIFE CYCLE

Annual

plant-characteristics

PLANT CHARACTERISTICS

blue flowers

growth-habit

GROWTH HABIT

Compact

bloom-season

BLOOM SEASON

Spring

flavour-profile

FLAVOUR PROFILE

Not applicable

suitable-for

SUITABLE FOR

Outdoor

About
Lobelia Cobalt Blue Seeds for Garden Planting

Lobelia Cobalt Blue is an ornamental annual with small, deep blue flowers. It is used for borders, garden edges, containers, window boxes and hanging baskets.

Planting information
planting-season

PLANTING SEASON

Spring

fruit-size

FRUIT SIZE

N/A

plant-height

PLANT HEIGHT

6–12 inches

light-requirement

LIGHT REQUIREMENT

Full sun

water-needs

WATER NEEDS

Moderate

hardiness-zone

HARDINESS ZONE

Grown as an annual

container-garden

CONTAINER GARDEN

Yes

plant-spacing

PLANT SPACING

4–6 inches

planting-depth

PLANTING DEPTH

Surface sow

growing-conditions

GROWING CONDITIONS

Well-drained

Coverage
Seed Count
Recommended Coverage
SEED COUNT
100

Frequently Asked Questions

What makes Cobalt Blue different from trailing lobelias?

It forms compact, low mounds with deep blue flowers, suited to edging, borders and containers.

Can it create colorful edging around flower beds?

Yes. Dense growth produces neat edging with vibrant seasonal blooms.

Which flowers complement Cobalt Blue Lobelia?

White alyssum, pink petunias, calibrachoa, and marigolds create colorful combinations.

Does it perform well in hanging baskets?

Yes. It grows well in baskets, window boxes, and patio containers.

Can it brighten small balcony gardens?

Yes. Compact plants provide strong color without requiring large planting spaces.

Does light trimming encourage fresh blooms?

Yes. Gentle trimming helps maintain a tidy shape and promotes continued flowering.