Planting Instructions for Pampas Grass Seeds


Pampas Grass Planting Guide

Quick Facts About Pampas Grass

Pampas Grass has "feather duster" plumes that bloom from late summer through the fall. It is a low-maintenance, drought-tolerant plant that thrives in hot climates and full sun. It takes 2 - 3 years to bloom, but the long-lived garden performance is the rich reward.

Planting Time

Plant indoors 4 - 6 weeks before the last frost. Or, start directly outdoors after danger of frost has passed.

Planting Location

Plant in full sun with well-drained soil.

How to Plant Pampas Grass

  • You have two options for planting seeds: Sow them directly into the garden, after the risk of frost has passed. These are very tiny seeds which should be mixed with the finest sand or talcum for an even sowing. Do not cover with compost, only press them in gently. Alternatively, start seeds indoors four to six weeks before the average last frost date in spring.
  • Presoak seeds overnight before planting 5 seeds per cell or plant.
  • 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 80 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.
  • To obtain good growth and plume production, pampas grass should be fertilized with a complete fertilizer (6-6-6, 8-8-8 or 10-10-10) at a rate of two pounds per 100 square feet four times each year.
  • There is no need to spray for insects or any other bothersome garden pest.
  • Ornamental grass care also includes cutting out the brown, dead foliage in the late winter. Or, if significant frost damage occurs, the entire plant can be cut back to 2 feet from the ground. Do note that the grass blades are sharp, so care must be taken when pruning.
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