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Salpiglossis, Royale Yellow

Short Description

Sun-loving favorite for beds and containers.

Full Description

Call us old-fashioned—please! Here’s a vintage beauty that’s overdue for a revival. The chorus of abundant deep yellow trumpets on 20”-24” stalks creates a florid display of delicious color in the border or a container. Plant it in a well-drained border or in a mixed-use garden where it can happily mingle with vegetables.
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Item#: 48400A
Order: 1 Pkt. (40 Seeds)
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$5.95
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Product properties

Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

6-10 inches

Spread The width of the plant at maturity.

4-8 inches

Ornamental Use Ways in which the product may be used in the garden for ornamental effect.

Beds, Borders, Container

Life Cycle This refers to whether a plant is an annual, biennial or perennial. Annuals complete their life cycles in one year; biennials produce foliage the first year and bloom and go to seed the second year; perennials can live for more than two years.

Annual

Growth Habit The genetic tendency of a plant to grow in a certain shape, such as vining or bush like.

Bush

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Annuals Tour #1
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  • Salpiglossis

    Salpiglossis
    Start Indoors Start Indoors Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer
    Transplant Transplant When to transplant bulbs or roots in the garden for spring
    Start Outdoors Start Outdoors Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer
    Start Indoors Fall Start Indoors Fall Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall
    Transplant Fall Transplant Fall Transplant Fall-When to transplant bulbs or roots in the garden for fall
    Start Outdoors Fall Start Outdoors Fall Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall
    First Date: Mar-07 - Last Date: Mar-21
    First Date: May-09 - Last Date: May-16
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How to Sow and Plant

Salpiglossis may be grown from seed sown early indoors and transplanted outside after frost, or sown directly in the garden.

Sowing Seed Indoors:

  • Sow salpiglossis indoors 8 weeks before the last frost.
  • Sow seed ¼ inch deep in seed starting formula. Be sure to cover and keep away from the light until the seeds germinate, as salpiglossis needs darkness in order to germinate.
  • Keep the soil moist at 70-75 degrees F
  • Seedlings emerge in 14-30 days
  • As soon as seedlings emerge, provide plenty of light on a sunny windowsill or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Raise the lights as the plants grow taller. Incandescent bulbs will not work for this process because they will get too hot. Most plants require a dark period to grow, do not leave lights on for 24 hours.
  • Seedlings do not need much fertilizer, feed when they are 3-4 weeks old using a starter solution (half strength of a complete indoor houseplant food) according to manufacturer’s directions.
  • If you are growing in small cells, you may need to transplant the seedlings to 3 or 4 inch pots when seedlings have at least 2 pairs of true leaves before transplanting to the garden so they have enough room to develop strong roots.
  • Before planting in the garden, seedling plants need to be “hardened off”. Accustom young plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun at first. If frost threatens at night, cover or bring containers indoors, then take them out again in the morning. This hardening off process toughens the plant’s cell structure and reduces transplant shock and scalding.

Sowing Directly in the Garden:

  • Direct sow in full sun in a rich, well-drained soil after danger of frost.
  • Remove weeds and work organic matter into the top 6-8 inches of soil; then level and smooth.
  • Sow seeds evenly and thinly in rows 18 inches apart and cover with ¼ inch of fine soil. Be sure to cover seed entirely as seed needs darkness in order to germinate.
  • Firm lightly and keep evenly moist.
  • Seedlings will emerge in 14-30 days depending on soil and weather conditions.
  • Thin to stand about 9-12 inches apart starting when seedlings are 1 inch high.

Transplanting in the Garden:

  • Select a location in full sun with a rich, well-drained soil.
  • Prepare the bed by turning the soil under to a depth of 6-12, inches removing any debris, and lightly raking as level as possible.
  • The addition of organic matter (leaf mold, compost, well-rotted manure) benefits all gardens and is essential in recently constructed neighborhoods.
  • Space plants about 9-12 inches apart.
  • Thoroughly water and apply a light mulch layer on top of the soil (1-2 inches) to conserve water and reduce weeds.
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating.
  • Mulches also help retain soil moisture and maintain even soil temperatures. For annuals an organic mulch of shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time. Always keep mulches off a plant’s stems to prevent possible rot.
  • Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1 inch of rain per week during the growing season. Use a rain gauge to check to see if you need to add water. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated.
  • After new growth appears, a light fertilizer may be applied. Keep granular fertilizers away from the plant crown and foliage to avoid burn injury. Use low rates of a slow release fertilizer, as higher rates may encourage root rots.
  • Remove spent flower spikes to encourage flowering and prevent seed development.
  • Pinch the growing tips of plants when they are about 4 inches tall to encourage bushiness.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • Salpiglossis tends to prefer cooler growing conditions.
  • Salpiglossis can happily mingle with vegetables, and is a great cottage garden flower.
  • Salpiglossis makes a beautiful cut flower.
  • Regular deadheading promotes continuous bloom throughout the season.
Sun
Full Sun
Height
6-10 inches
Spread
4-8 inches
Ornamental Use
Beds, Borders, Container
Life Cycle
Annual
Growth Habit
Bush
Sow Method
Direct Sow/Indoor Sow
Flowering
Yes
Bloom Duration
12 weeks
Flower color
Yellow
Salpiglossis, Royale Yellow is rated 4.5 out of 5 by 2.
Rated 4 out of 5 by from Beautiful These were such a beautiful bright yellow delicate flower! They bloomed for quite a long time but when the blooms died the whole plant also died. Not sure what happened but all of them that I planted did this. I would plant again though.
Date published: 2012-01-17
Rated 5 out of 5 by from Delightful flower! This is a beautiful flower! The yellow just seems so bright and cheerful. There are many more unique colors of this flower though, almost a blue and maroon and yellow and orange that are just as beautiful as the yellow.
Date published: 2011-08-28
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