In mild winter climates where plants won’t encounter freezing weather or where they can be protected from frosts, sow trailing lobelia seed in
late summer
so it can grow and flower through the cool fall, winter and spring.
When can you plant Lobelia outside?
Planting lobelia
Bedding plants should be planted out at the
end of May or early June
, after the fear of any frosts. If you have a greenhouse or other protected growing area, you can plant up containers and hanging baskets earlier for the plants to grow on and so flower earlier, before putting outside in early summer.
How cold can Lobelia tolerate?
The Lobelia x speciosa varieties are perennials. These are hardy to
5 to 14 degrees Fahrenheit (-15 to -10 C.)
. Either variety needs well-draining soil in full sun for best blooming. The annual forms tend to get weedy when temperatures get hot in summer but can be rejuvenated by cutting the plants back by half.
Can you plant trailing lobelia in the ground?
Annual lobelia will grow nearly anywhere. Lobelia seeds can be sown directly in the garden or indoors for later transplanting. These plants typically require an area with full sun but will tolerate partial shade. They also prefer
moist, rich soil
.
When can you plant Lobelia outside UK?
Lobelia is best planted outside in the UK in
late May or early June
with the rest of your summer annuals when the risk of frost should be long gone.
Can lobelia grow in shade?
Lobelia. Add lobelias to shade gardens for rich, true blues. … Annual lobelia is a cool-season plant that can tolerate
most light conditions
, including shade.
Do lobelia plants spread?
Lobelia is a small plant that generally grows to heights no taller than 10 inches.
Bush types spread only five to nine inches
, but trailing varieties expand as much as 1 1/2 feet.
Why do my lobelia keep dying?
Too Little Water
During warm weather
, lobelia leaves and flowers can dry out. If the dehydration is too severe, the plant may die. Water your lobelia in pots consistently so the soil stays moist and never draws away from the side of the container.
What is the lowest temperature petunias can tolerate?
However, petunias usually tolerate temperatures as low as
39 F. (4 C.)
with no problem, but they are definitely not plants that will survive the winter in most climates. Petunias are damaged extensively at 32 F.
What is the lowest temperature impatiens can tolerate?
The succulent stems and thin leaves of impatiens do not endure temperatures of
32 degrees Fahrenheit or below
. Even with temperatures below 36 degrees, low elevations may collect frost and cause partial defoliation of impatiens.
Where does trailing lobelia grow best?
Planting and Growing Lobelia
Grow in deep, rich, moist soil, in full sun or partial shade. Trailing forms are popular in
hanging baskets, window boxes and containers
. Low growing forms are ideal for the front of beds and borders, where a quick splash of colour is needed.
Does lobelia like sun or shade?
| Botanical Name Lobelia erinus | Sun Exposure Full sun to partial shade | Soil Type Friable, evenly moist, and well-drained | Soil pH Slightly acidic to neutral | Bloom Time In the North, lobelia blooms all summer and into fall, until the first frost. |
|---|
Are trailing lobelia Hardy?
Commonly known as the blue cascade trailing Lobelia. … This
half hardy annual
is a trailing plant that is ideal for use in hanging baskets and pots.
Can lobelia grow in pots?
Growing Lobelia in Containers
These petite pink, white, or blue flowers create a dramatic impact in planters. The profusion of blooms makes growing lobelia in a pot an excellent choice. … These plants require consistent moisture, but they do not grow well when overwatered or when containers have become waterlogged.
How many lobelia plants are in a hanging basket?
| Plant Flower pouch 30cm (12′′) basket | Lobelia 10 12 | Pansy and Viola 10 10 | Petunia (trailing) 8 5 | Primrose and Polyanthus 10 7 |
|---|
How do you keep lobelia blooming all summer?
To extend the blooming period of lobelia in summer or encourage a second bloom,
you can trim your plants at any time of the year
. This encourages another flush of blooms, maintains their overall look, and some gardeners even prune the plant at half an inch when the blooming period ends.
