How to Grow Lobelia Plants
Annuals and Perennials, Lobelia
Lobelias flowers are profuse bloomers, producing a rainbow of color from
late spring up to frost. These cool weather flowers are a favorite among
home gardeners. The plants are an easy to grow flower. It is native to North
and South America.
While there are a couple hundred varieties of Lobelia, only a few varieties
are commonly grown in the home garden. There are annual and perennial varieties
of Lobelia. Even the perennial varieties are often grown in the home garden
Most Lobelia plant varieties are compact, only growing 3 to 6 inches tall.
However, some varieties will grow three feet tall. Colors include white,
blue, purple, pink, and crimson. Blue is the most popular.
Try these compact plants as border edging, along creek beds, in containers,
or in windowsill planters. They are great flowers for hanging baskets, too.
Lobelia plants have been used medicinally to treat Asthma, Bronchitis, and
Plant Height: most grow 4" to 6"
Other names: Indian Tobacco, Gagroot, Bladderpod, Pukeweed
Lobelia plants are grown from tiny seeds. Lobelia seeds can be directly seeded
into your flower garden or seeded indoors for transplanting later. Seeds
need two to three weeks to germinate. We recommend planting Lobelias in pots
and containers indoors, then transplanting them outdoors.
For outdoors starts, sow lobelia seeds early in the season and cover lightly
with soil. Water thoroughly once.
Transplant Lobelias into your garden after the last frost date for your area.
Spacing depends upon varieties, with miniature varieties spaced four to six
Under ideal conditions, Lobelia will reseed itself.
Days to Germination: 4 -7 days
How to Grow Lobelia Plants:
Lobelia plants like full sun to partial shade. Plants prefer cool weather.
Lobelias like rich, wet soil. Plants will thrive in moist to wet soil along
creek beds and streams, or in natural wetlands.
Established plants need little attention. Keep soil moist to wet. Water
frequently during dry spells. For peak performance, add a general
purpose fertilizer once a month.
Around mid-summer, your plants will begin to produce flowers, and will continue
to do so up to the first frost. You do not need remove dead flower blooms,
except for appearance.
Flowers Bloom: Summer
Insect and Disease:
Insects and disease problems are infrequent. Apply insecticides or fungicides
only as needed.