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Lavender companion · grow guide
Agave · Agave potatorum
Agave needs blazing sun, gritty fast-draining soil and a dry winter. Most types you see here are frost-tender, so in Michigan grow them in pots and bring them inside before frost.
Check my zone & planting dates
Full sunLight
Low waterFast drainage
pH 6.0–8.0Soil
Zones 9a–10bHardiness
15″ tall18″ wide
Some resistanceDeer · rabbits some resistance
Mildly toxicPets
Huckleberry saysTell me where you grow and I’ll check if Desert Diamond will thrive there.
Hardy in zones 9a–10b
Pot up plugs any time indoors; set outside after nights stay above about 50°F. In-ground planting only where the species is winter-hardy.
Your year with Desert Diamond
When it arrives
Agave plugs are slow, small rosettes. Pot each into a 4 in pot of gritty cactus mix, water once, then let it dry. Keep in bright light, out of harsh midday sun for a week, then give full sun. Pot up again only when roots fill the pot.
Pot up plugs any time indoors; set outside after nights stay above about 50°F. In-ground planting only where the species is winter-hardy.
Set the rosette's base at the soil line, with lower leaves resting on top. Never bury the base or leaves; a gravel collar helps keep it dry.
Give each rosette room to reach its mature width; one plant per pot.
Sandy, gravelly or rocky; never heavy clay · pH 6.0–8.0
Fix-it tip: Use a cactus mix cut with extra grit, pumice or coarse sand. In the ground, plant on a mound or slope and add gravel; standing winter water is what kills agave.
Full sun (tolerates bright light with a few hours of shade, especially indoors in winter).
Too little light makes rosettes stretch and lose their tight, sculptural shape and blue or banded color.
Don’t give up on it
Agave is evergreen and does not go dormant like perennials. Growth slows in winter indoors and picks up when warm, sunny days return; new leaves unfold slowly from the center.
Move outdoors after frost danger; harden off to full sun.
Full sun, deep but infrequent watering; light feeding.
Bring indoors before the first frost; reduce water.
Bright window, cool and dry; water about monthly.
First season: Water a newly potted plug lightly, then let the mix dry almost completely before watering again. Roots rot fast in soggy mix.
After that: Very drought tolerant. Water deeply only when the pot is dry in summer; in winter indoors, water roughly once a month or less.
Little needed. Feed potted plants once or twice in late spring or summer with a diluted, low-nitrogen fertilizer for cacti and succulents. Skip feeding in fall and winter.
Remove only dead, dried lower leaves by pulling or cutting close to the trunk. Wear gloves and eye protection; tips are sharp and the sap can irritate skin.
Rarely needed. Some agaves make pups (offsets) at the base; separate them with roots in spring or summer and pot them up. Each rosette blooms once after many years, then dies.
Species differ a lot. A. parryi and A. ovatifolia are the cold-hardiest (about zone 7, and only with a dry winter). A. potatorum, A. pygmaea, A. schidigera and similar hybrids are frost-tender. In Michigan, overwinter all of them indoors.
Loves heat and handles humidity if soil drains fast. Move indoor-wintered plants outside gradually so leaves don't sunburn.
Base turns soft and the rosette tips overLikely cause: Crown rot from wet soil or cold, wet conditions
What to do: Cut away rot to clean tissue, let dry several days, repot in dry gritty mix. Water much less.
White or brown scorched patches on leavesLikely cause: Sunburn after moving from indoors to full sun
What to do: Harden off over 1–2 weeks with morning sun first. Damaged leaves won't heal but new ones will be fine.
Rosette stretched, pale and floppyLikely cause: Not enough light, usually indoors
What to do: Move to the sunniest window or under grow lights, and give full sun outdoors all summer.
White cottony bits at the leaf basesLikely cause: Mealybugs
What to do: Dab with rubbing alcohol on a cotton swab or spray insecticidal soap; repeat weekly until gone.
Soft, mushy or translucent lower leaves and a rotten smell mean too much water. Deeply wrinkled, curling leaves mean it is too dry for too long.
Sap can irritate skin and mouths, and the sharp spines and leaf tips can injure pets and people. Not listed in ASPCA's database; keep pots out of pets' and kids' paths.
Deer: somewhat resistant · Rabbits: somewhat resistant
Finnegan saysStill not sure what’s wrong? Ask Plant Health — describe it or add a photo.
Good in pots · 1 gallon+
Ideal for pots. Use a heavy, wide clay pot with a drainage hole and gritty mix; choose a pot just a bit wider than the rosette.
Can grow indoors
Grows well indoors in the sunniest south- or west-facing window. Summer outdoors in full sun gives the best color.
No chill needed
No chilling needed. Agaves bloom only once, often after many years, then the rosette dies.
Plugs from the tray
3–4 inch pots for 3–5 weeks, until roots hold the soil
Garden bed or a 1 gallon potTime to move up? Slide the plant out: if white roots wrap the outside of the soil, it’s ready for the next size.
Planting with lavender
Plant it right alongside lavender
A great match: both want full sun, lean gritty soil and no extra water. Set potted agaves beside lavender on a sunny patio, or plant them together in a gravel bed where agave is hardy.
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