1. NASTURTIUM officinale - Watercress

 NASTURTIUM officinale  Watercress  Zone 4  nas-tur’shum o-fi-shi-na’le   Perennial  Easy Brassicaceae, native to Europe. Germination: Sow outdoors in early spring through summer in a source of water such as a stream, bog, or pond....

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2. NEMESIA strumosa - Pouch Nemesia

 NEMESIA strumosa  Pouch Nemesia    ne-me’se-å stru-mo’så  Annual  Easy Scrophulariaceae; native to South Africa. Germination: Best sown indoors at a temperature of 55-70°. Sow seeds 4-6 weeks before planting out and at a depth of 4...

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3. NEMOPHILIA menziesii - Baby Blue Eyes

 NEMOPHILIA menziesii  Baby Blue Eyes    ne-mof’i-lå men-zeze’-i  Annual  Moderate Hydrophyllacea; native to California. Germination: Best sown indoors at a temperature of 50-55°. Germination will occur in 7-12 days. Can be sown outdoors...

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4. NEPETA cataria - Catnip

 NEPETA cataria   Catnip  Zones 3 to 8  ne-pe’tå kat’är-e-å   Perennial Herb  Easy Lamiaceae; native to Eurasia. Germination: Best sown indoors at a temperature of 68-72° with no cover as light aids in germination. Expect germination...

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5. NEPETA species - Catmint

 NEPETA species  Catmint  Zones in text below  ne-pe’tå  Perennial  Easy Lamiaceae; N. x faasseni is native to Iran, N. nervosa is native to India. Germination: Best sown indoors at alternating temperatures of 68 and 86°. Sow at a depth of...

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6. NEPETA x faassenii - Catmint

 NEPETA x faassenii  Catmint  Zones 3 to 8  ne-pe’tå få-sen’e-i  Perennial Herb  Easy Lamiaceae; of no direct nativity. Germination: Best sown indoors at a temperature of 68-72° with no cover as light aids in germination. Expect...

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7. NICOTIANA alata - Flowering Tobacco

 NICOTIANA alata  Flowering Tobacco    ni-ko-she-a’nå å-la’tå  Annual*  Easy Solanaceae; native to South America. Germination: Best sown indoors, 6-8 weeks before last frost, at alternating 68 and 86°. Sow with no cover as light aids...

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8. NIEREMBERGIA species - Cupflower

 NIEREMBERGIA species  Cupflower  Zone 7  ne-rem-ber’ge-å  Perennial  Easy Solanaceae; native to Argentina. Germination: Best sown indoors at 70-75°. Sow 10-12 weeks before last frost and expect germination in 15-20 days. Can also be sown...

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9. NIGELLA damascena - Love-In-A-Mist

 NIGELLA damascena  Love-In-A-Mist    ni-jel’å dam-å-se’nå  Annual  Easy Ranunculaceae, native to southern Europe and northern Africa. Germination: Best sown indoors at 55-70°. Sow seeds 4-6 weeks before planting out and expect...

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10. NYMPHAEA species - Water Lily

 NYMPHAEA species  Water Lily  Zones 10 to 11*  Nim-fa’-å  Perennial   Nymphaceae; occuring worldwide in aquatic habitat. Germination: Sow on top of germinating medium with a very light cover of sand and immerse in water so that they are...

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