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 Thyme vs. Borage vs. Butterfly Pea
The comparison
| Fact | | | |
|---|---|---|---|
| Difficulty | Moderate | Easy | Easy |
| Life cycle | Perennial | Annual | Not yet verified |
| Germination time | 14–21 days | 7–14 days | 14–21 days |
| Germination temperature | 18–21 °C64–70 °F | Not yet verified | Not yet verified |
| Sowing depth | Not yet verified | 6 mm–1.5 cm¼–½ in | Not yet verified |
| Spacing between plants | 20–30 cm8–12 in | 30 cm12 in | Not yet verified |
| Sun | Full sun, partial shade | Full sun, partial shade | Full sun |
| Water | Not yet verified | Low | Not yet verified |
| Containers | Yes | Yes | Not yet verified |
| Soil pH | pH 6.3 | Not yet verified | Not yet verified |
| Toxicity to cats | Non-toxic | Toxic | Not yet verified |
| Toxicity to dogs | Non-toxic | Toxic | Not yet verified |
| Links |
Up close
What each one is, in a few lines, with the full growing guide one click away.
HerbsThymus vulgaris
Common thyme is a woody, evergreen perennial herb that forms a mound 6 to 12 inches tall in full sun. It can be started from seed, but germination is uneven, so many gardeners prefer cuttings or divisions.
How to grow thymeHerbsBorago officinalis
Borage is an easy annual herb grown from seed in full sun. Its cucumber-flavored leaves and flowers should be used sparingly, and the plant is listed as toxic to dogs and cats.
How to grow borageHerbsClitoria ternatea
Butterfly pea is a fast-growing vine with sky-blue flowers that you can start from seed in full sun. Its flowers are used as a natural food coloring.
How to grow butterfly peaKeep comparing
Add a third seed, or swap one for a close relative from the same category.
The 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.
