Growing Guide
 
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Foxglove, Yellow

Herbaceous Perennial Flower

Digitalis grandiflora
Scrophulariaceae Family
Synonym: Digitalis ambigua, Digitalis orientalis

The toughest and most reliable of the foxgloves, this long-lived perennial grow up to 3 feet tall bearing large yellow flowers with brown spots on the inside.

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Site Characteristics
Sunlight:
  • part shade

Soil conditions:

  • requires well-drained soil
  • requires high fertility
Tolerates a wide range of soil conditions, except for very wet or very dry. Performs best in rich soil that is moist but well-drained.

Hardiness zones:

  • 3 to 8
Plant Traits

Lifecycle: perennial

Ease-of-care: easy

Height: 1.5 to 3 feet

Spread: 1 to 1.5 feet

Bloom time:

  • early summer
  • mid-summer

Flower color: yellow

Pale yellow with brown spotting/veining

Foliage color: dark green

Foliage texture: medium

Shape: cushion, mound or clump

Clump-forming.

Shape in flower:

  • flower stalks with upright spikes
  • flower stalks with flowers as cups

Flowers borne along erect stems.

Special Considerations
Special characteristics:
  • deer resistant
  • non-aggressive - Will self-seed under favorable conditions.
  • non-invasive
  • not native to North America - Native to central and southern Europe, Siberia and Asia Minor
Special uses:
  • cut flowers
Growing Information
How to plant:

Propagate by seed, division or separation - Seed germinates best at 70 F to 75 F in humid conditions. Will self-seed under favorable conditions.

Divide in spring or fall, separating new plantlets from the crown.

Maintenance and care:
Keep soil moist but not soggy.

Cut flower stems back to lateral bud when stalks begins to fade, then cut flower stem off entirely down to basal rosette after blooming has ceased.

Pinched plants will not develop large flower spike, but will produce several smaller ones that aren't nearly as spectacular.

More growing information: How to Grow Perennials

Diseases:
Mildew
Leaf spot in hot and humid weather
Varieties
'Carillon' grows 1 foot tall and bears yellow flowers.

'Temple Bells' grows 1 to 1.5 feet tall and bears small yellow flowers. Blooms the first year from seed.