Phacelia Growing Guide

Phacelia tanacetifolia

Crop Rotation Group

Miscellaneous ●

Soil

Any sunny site with good drainage.

Position

Full sun to partial afternoon shade.

Frost tolerant

Phacelia seedlings can tolerate light frost, but the plants are easily damaged by hard freezes.

Feeding

None usually needed.

Spacing

Single Plants: 5" (15cm) each way (minimum)
Rows: 5" (15cm) with 5" (15cm) row gap (minimum)

Sow and Plant

Sow phacelia in spring while the soil is still cool. Make sure seed is well covered, because phacelia seeds need darkness to germinate. Broadcast seed into cultivated soil so that the seeds are about 2 inches (5 cm) apart and one-fourth inch (0.5 cm) deep. Thin to 10 inches (25 cm) apart in all directions.
Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.

Notes

Limit reseeding by pulling up or turning under phacelia just after it blooms, but before it develops mature seeds.

Harvesting

Phacelia can be pulled up and composted any time. Pull up individual plants grown for flowers before they shed seeds.

Planting and Harvesting Calendar

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Pests which Affect Phacelia

Aphids (General)

Slug

Snail