Side by side
Pick two or three seeds to see how they grow, side by side: sprouting, spacing, sun, water, frost and pet safety in one table.
Comparing Nasturtium vs. Ageratum vs. African Daisy
The comparison
| Fact | | | |
|---|---|---|---|
| Difficulty | Easy | Easy | Moderate |
| Life cycle | Annual | Annual | Not yet verified |
| Germination time | 7–14 days | 7–21 days | Not yet verified |
| Germination temperature | 16–18 °C61–64 °F | 24–27 °C75–81 °F | 18 °C64 °F |
| Sowing depth | 1.5–2.5 cm½–1 in | On the surface | Not yet verified |
| Spacing between plants | 20–30 cm8–12 in | Not yet verified | Not yet verified |
| Sun | Full sun, partial shade | Full sun, partial shade | Full sun |
| Water | Not yet verified | Moderate | Low |
| Containers | Yes | Yes | Yes |
| Frost tolerance | Not yet verified | Tender (no frost) | Half-hardy (light frost) |
| Links |
Up close
What each one is, in a few lines, with the full growing guide one click away.
FlowersTropaeolum majus
An easy, fast-growing annual with edible, peppery leaves and flowers. Sow it straight into poor to average soil after the last frost; too much fertilizer means fewer flowers.
How to grow nasturtiumFlowersAgeratum houstonianum
Ageratum is a frost-tender annual with fluffy blue, pink or white flower clusters that is usually started from seed indoors about 8 to 10 weeks before the last spring frost.
How to grow ageratumFlowersOsteospermum ecklonis
Osteospermum ecklonis, the African daisy, is an evergreen shrub with daisy flowers that have dark blue centres and white-to-indigo petals. It likes full sun and can be sown in spring at 18 °C (64 °F).
How to grow african daisyKeep comparing
Add a third seed, or swap one for a close relative from the same category.
Nasturtium vs. African MarigoldNasturtium against another flowerAgeratum vs. African MarigoldAgeratum against another flowerAfrican Daisy vs. African MarigoldAfrican Daisy against another flower
Nasturtium vs. Alpine AsterNasturtium against another flowerAgeratum vs. Alpine AsterAgeratum against another flowerAfrican Daisy vs. Alpine AsterAfrican Daisy against another flowerThe table, row by row
Every row is a fact from each seed's own profile, lined up so the differences stand out.
Germination time and temperature
How many days the seeds take to sprout, and the temperature range they sprout in.
Sowing depth and spacing
How deep to sow each seed and how far apart the plants should grow. “On the surface” means the seed isn't covered.
Days to maturity and life cycle
How long until the plant is ready, counted from sowing or from transplanting (each value says which). Annuals live one year, biennials two, perennials longer.
Sun and water
Full sun means 6 or more hours of direct sun a day, partial shade a few hours. Water needs are rated low, moderate or high.
Containers, frost tolerance and soil pH
Whether it grows in a pot, with the smallest pot when it's known. Frost tolerance runs from tender (no frost) to hardy. Soil pH 7 is neutral.
Toxicity to cats and dogs
Whether the plant is toxic to cats and dogs.
Quick wins
Days from sowing until the first shoots appear, in good conditions.
Pet friendly
Listed as non-toxic to both cats and dogs. Each seed's page has the details.
Not safe for pets: borage, buckwheat, caraway, carnation and 14 more.
Comparing
Each seed's page explains how to grow it from seed, with facts researched and reviewed by our editors.
