Planting Instructions for Ohio Spiderwort Seeds


Ohio Spiderwort Planting Guide

Quick Facts About Ohio Spiderwort

Ohio Spiderwort is a versatile perennial that grows well from seed. It is drought-resistant, an aggressive spreader, and a self-sower. When grown in partial shade it grows dark green foliage, and when grown in full sun it will produce more flowers.

Planting Time

Plant indoors 4 - 6 weeks before the last frost. Or, start directly outdoors in the late fall after several frosts have occurred.

Planting Location

Plant in full sun to partial shade in clay, loam, or sandy soil.

How to Plant Ohio Spiderwort

  • You have two options for planting seeds: Sow them directly into the garden at a depth of 1/8 - 1/4 inch, in the late fall after several frosts have occurred. Alternatively, start seeds indoors four to six weeks before the average last frost date in spring.
  • If grown indoors, the seeds need to have a cold treatment in the refrigerator for 3 months prior to planting.
  • Plant 1 ounce per 500 square feet.
  • Once seedlings sprout, ensure they receive plenty of light by placing them on a sunny windowsill or positioning them 3-4 inches below fluorescent plant lights that are switched on for 16 hours daily and off for 8 hours at night. Adjust the lights as the plants grow taller. Avoid using incandescent bulbs as they generate excessive heat. Remember, most plants need a period of darkness to thrive, so do not keep the lights on for 24 hours.
  • Transplant into garden when temperatures are consistently warm.
  • Before transplanting seedlings into the garden, it's essential to "harden them off". This involves acclimating young plants to outdoor conditions by placing them in a sheltered outdoor area for about a week. Initially, shield them from strong winds and direct sunlight. If there's a risk of frost overnight, either cover the plants or bring them indoors, then return them outside in the morning. This hardening off method helps strengthen the plant's cell structure, minimizing transplant shock and sun damage.
  • Space plants 8 - 18 inches apart in garden.

Care And Maintenance

  • 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 play a vital role in preserving soil moisture and ensuring consistent soil temperatures. When it comes to annuals, using organic mulch made from shredded leaves not only enhances the appearance of the bed but also enriches the soil as it decomposes over time. Remember to keep mulch away from the plant stems to avoid potential rot issues.
  • Water regularly, keeping the plants fairly moist.
  • Deadhead to encourage more blooms. Cutting the plants back once they are flowering can help to encourage a second bloom.
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