FlowersCelosia
Celosia argentea
Difficulty: EasyGrows in pots
Celosia argentea is a tropical annual with feathery, plume-like flowers that bloom until the first frost. It is easy to start from seed and grows best in full sun.
How to grow celosia
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Comparing Celosia vs. Bidens vs. African Marigold
The comparison
Celosia vs. Bidens vs. African Marigold
| Fact | | | |
|---|---|---|---|
| Difficulty | Easy | Easy | Easy |
| Life cycle | Not yet verified | Perennial | Annual |
| Germination time | 8–14 days | Not yet verified | 4–7 days |
| Germination temperature | 21–27 °C70–81 °F | Not yet verified | 24–27 °C75–81 °F |
| Sowing depth | 3 mm⅛ in | Not yet verified | 6 mm¼ in |
| Sun | Full sun | Full sun | Full sun, partial shade |
| Water | Moderate | Low | Moderate |
| Containers | Yes | Yes | Yes |
| Frost tolerance | Tender (no frost) | Half-hardy (light frost) | Tender (no frost) |
| Soil pH | pH 6.0–8.0 | Not yet verified | pH 6.0–7.0 |
| Toxicity to cats | Non-toxic | Not yet verified | Not yet verified |
| Toxicity to dogs | Non-toxic | Not yet verified | Not yet verified |
| Links |
Up close
Meet the seeds
What each one is, in a few lines, with the full growing guide one click away.
- Flowers
- Flowers
Bidens
Bidens ferulifolia
Difficulty: EasyGrows in potsBidens ferulifolia is a sun-loving, drought-tolerant plant with bright yellow daisy flowers, usually grown as an annual in containers and borders.
How to grow bidens - Flowers
African Marigold
Tagetes erecta
Difficulty: EasyGrows in potsAfrican marigold is a tender annual grown from seed in full sun, with fragrant leaves and showy flowers that attract butterflies. It also grows well in containers.
How to grow african marigold
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- African Marigold vs. African DaisyAfrican Marigold against another flower
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- African Marigold vs. AgeratumAfrican Marigold against another flower
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How to read a comparison
Every row is a fact from each seed's own profile, lined up so the differences stand out.
Sprouting
Germination time and temperature
How many days the seeds take to sprout, and the temperature range they sprout in.
Sowing
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.
Timing
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.
Light and water
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.
Space and weather
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.
Pets
Toxicity to cats and dogs
Whether the plant is toxic to cats and dogs.
Quick wins
Fastest to sprout
Days from sowing until the first shoots appear, in good conditions.
Pet friendly
Safe around cats and dogs
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
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Each seed's page explains how to grow it from seed, with facts researched and reviewed by our editors.
