Indoor Lobelia Seed Germination: – Sow seeds indoors 8 to 12 weeks before the final frost date Sow thickly and lightly push into seed-starting solution. Maintaining soil moisture at 65 to 75 degrees Fahrenheit Seedlings emerge in around 20 days. As soon as seedlings sprout, place them on a sunny windowsill or nurture them inside.3 to 4 inches under fluorescent plant lights that are on for 16 hours per day and off for 8 hours at night.
Increase the intensity of the lighting as the plant’s height increases. Because they become excessively hot, incandescent lights cannot be used for this procedure. Most plants require a dark phase to thrive; therefore, lights should not be left on for 24 hours. Feed seedlings a starting solution (half strength of a full indoor houseplant meal) according to the manufacturer’s instructions when they are 3 to 4 weeks old.
If you are growing lobelia in tiny cells, you may need to transplant the seedlings to 3 or 4 inch pots until they have at least two pairs of genuine leaves before transferring them to the garden so that they can establish robust roots. Before putting lobelia seedlings in the garden, they must be “hardened off” Introduce immature plants to outside circumstances by transferring them to a covered outdoor location for one week.
How long do lobelia seeds require to bloom?
Rapid Reference Planting Guide –
| Plant Type: | Tender perennial grown as an annual | Flower / Foliage Color: | Blue, pink, purple, white/green |
| Native to: | Southern Africa | Tolerance: | Part shade |
| Hardiness (USDA Zone): | 10-11 (perennial) | Maintenance: | Moderate |
| Bloom Time / Season: | Spring to fall | Soil Type: | Average, organically rich |
| Exposure: | Full sun to part shade | Soil pH: | 5.5-6.5 |
| Spacing: | 4-6 inches | Soil Drainage: | Well-draining |
| Planting Depth: | Surface (seeds) | Companion Planting: | Begonia, calibrachoa, fuchsia, helichrysum |
| Height: | 4-9 inches | Uses: | As fillers and spillers in containers, hanging baskets, and window boxes. For edging and fillers in beds, butterfly gardens, and rockeries. |
| Spread: | 8-16 inches | Order: | Asterales |
| Growth Rate: | Moderate | Family: | Campanulaceae |
| Time to Maturity: | 12-16 weeks from sowing | Genus: | Lobelia |
| Water Needs: | Moderate | Species: | erinus |
| Common Pests: | Corn earworm | Common Diseases: | Damping off |
Author: Nikki Tilley, The Bulb-o-licious Garden The lobelia plant (Lobelia spp.) is a beautiful annual herb that comes in several forms. Some of these plants are even biennials. Lobelia is a low-maintenance plant that thrives in cold temperatures. This summer-blooming plant will continue to produce blossoms until the first frost. Lobelia is a beneficial addition to a garden.
How rapidly does lobelia develop?
Lobelia Seed Germination Lobelia seeds should germinate between 10 and 21 days. When the seedlings are grown enough to be transplanted, space them 5cm apart in trays. Lobelia plants must be acclimatized to outdoor conditions prior to planting (after all risk of frost has passed) at a distance of 15cm apart in a sunny location. Purchase UK Lobelia Seeds from Suttons
Lobelia Winter Care – Overwintering Tips For Lobelia Plants By: Bonnie L. Grant, Certified Urban Agriculturist There are several varieties. Some are annuals, some are perennials, while others are annuals just in the north. Annuals often self-seed and return the following year, whereas perennials emerge from the dormant plant in the spring. 
Is it too late to plant seeds of lobelia?
How to propagate lobelia: In February or March, sow lobelia seeds. You might combine the small seeds with silver sand to make the task easier. They require a temperature between 18 and 24 degrees Celsius (65 and 75 degrees Fahrenheit) to germinate, so use a heated propagator or a polythene bag and place somewhere warm.
Design of Containers – Lobelia cascades gracefully from a hanging basket. Lobelia makes a great container plant due to its form. Depending on the kind, it can either create a mounding border or pour over the boundaries. The trailing variants are particularly well-suited to window boxes and hanging baskets.
- Combine lobelia with other plants that thrive in chilly temperatures to fill a pot in the spring.
- Some lobelia cultivars’ electric blue hue will complement pansies, violas, white snapdragons, alyssum, and dusty miller.
- When planted alone, Lobelia may form magnificent, full, mounding pots.
- If you want a container to survive the full season, couple it with long-flowering flowers or stagger the blooming of the plants.
White Petunias and impatiens will work nicely and bloom throughout the summer. Coleus will provide an appealing foliage partner for shade-loving lobelia.
Should I cover the seeds of lobelia?
Lobelia need light in order to germinate. We recommend using a hand sprayer to adequately irrigate the soil. Keep at a temperature of 15-20 degrees Celsius (60-68 degrees Fahrenheit). Seedlings should emerge within seven to fourteen days.
