1. GAILLARDIA x grandiflora - Blanket Flower

 GAILLARDIA x grandiflora  Blanket Flower  Zones 3 to 10  ga-lar’de-å gran-di-flôr’-å  Perennial  Easy Asteraceae, native to North America. Germination: Sow seeds indoors at 68-70° with no cover. Expect germination in 10-15 days. Seeds...

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2. GAURA lindheimeri - White Gaura

 GAURA lindheimeri  White Gaura  Zones 6 to 9  gâr’å lind-hi’mer-i  Perennial  Easy Onagraceae, native to North America. Germination: Best sown indoors at a temperature of 68-70° and at a depth of 4 times the seed size. Expect...

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3. GENTIANA species - Gentian

 GENTIANA species  Gentian  Zones 4 to 8  jen-shi-a’nå  Perennial  Difficult Gentianaceae, native to mountainous temperate regions of Europe. Germination: Best sown indoors at 68-75° AFTER 3 weeks of cold-moist stratification. Expect...

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4. GERANIUM sanguineum - Cranesbill

 GERANIUM sanguineum  Cranesbill  Zones 3 to 8  je-ra’ni-um san-gwin’e-um  Perennial  Moderate Geraniaceae; native to Eurasia. Germination: Best sown indoors at alternating temperatures of 55 and 72°. Sow at a depth of 4 times the...

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5. GERBERA jamesonii hybrids - Transvaal Daisy

 GERBERA jamesonii hybrids  Transvaal Daisy  Zones 7 to 10  ger’-ber’å ja-mes-on’e-i  Perennial  Easy Asteraceae; native to South Africa. Germination: Sow indoors at 68-70° with only partial cover as light aids in germination. Place...

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6. GEUM species - Avens

 GEUM species  Avens  Zones in text below  je’um  Perennial  Easy Rosaceae, G. chiloense is native to Chile, G. reptans is native to Europe Germination: Best sown indoors 10-12 weeks before planting out. Sow at 68-70° and at a depth of 4...

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7. GLADIOLUS x hortulanus - Garden Gladiolus

 GLADIOLUS x hortulanus  Garden Gladiolus  Zones 8 to 10  Glad-ee’-oh-lus  Perennial  Moderate Iridaceae; native to the tropics. Germination: Sow outdoors where plants are to grow, or sow indoors in late winter, maintaining a temperature...

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8. GLORIOSA species - Gloriosa Lily

 GLORIOSA species  Gloriosa Lily  Zones 8 to 11  glor-e-o’-sa  Perennial  Difficult Liliaceae; native to tropical Asia and Africa. Germination: Sow seeds indoors at any season, maintaining a temperature within the medium of 70-75° during...

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9. GYPSOPHILA species - Baby’s Breath

 GYPSOPHILA species  Baby’s Breath  Zones 3 to 7  jip-sof’i-lå  Perennial  Easy Caryophyllaceae, native to Europe and Asia. Germination: Sow indoors 8-10 weeks before planting out at 55-70° with no cover as light aids in germination....

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