Plant care
Almond 'Mission' (Mission almond) care
Prunus dulcis 'Mission'
Also called Mission almond, Ne Plus Ultra almond.
Watering rhythm
7-10days
Deep watering every 7-10 days during the growing and nut-fill period; reduce near harvest
Light
Direct sun (at least 4-6 hours)
Soil
Deep, well-drained sandy to loamy soil
Humidity
Low to moderate
Temp
-15 to 40°C
Pet safety
Toxic to pets
Mature size
Around 4.5-6 m tall and wide on standard rootstock
Care at a glance
Light
Most houseplants will scorch where almond 'mission' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun, 8 or more hours, for heavy bloom and good kernel fill. It is unproductive and disease-prone in shade or cool, damp positions. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.
Watering
For almond 'mission' in the ground or in a bed, aim for deep watering every 7-10 days during the growing and nut-fill period; reduce near harvest. Soak the root zone rather than misting the foliage; deep, less-frequent watering trains roots downward and produces a more drought-resilient plant by mid-season. Provide steady moisture from bloom through kernel fill for size and quality; allow the surface to dry between soakings. Established trees handle dry spells but dislike wet feet.
Soil and pot
Almond 'Mission' grows best in deep, well-drained sandy to loamy soil. Prefers pH 6.0-7.5 and good drainage. Heavy, waterlogged soils promote crown and root rot; deep, free-draining ground gives the best vigour and drought resilience. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.
Humidity and temperature
Almond 'Mission' sits happiest at around Low to moderate humidity and -15 to 40°C (5 to 104°F). Dry-summer climates suit it best; humid or wet conditions at bloom and harvest favour brown rot and hull rot. Prune for an open, airy canopy. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.
Fertilising
Feed almond 'mission' sparingly. Feed in spring with nitrogen and potassium to support shoot growth and nut fill; avoid late-season nitrogen. A compost or straw mulch conserves moisture and supplies slow-release nutrients. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.
Common problems
Below are the issues we see most often on almond 'mission' in the Growli community. Each is annotated with the most common cause so you know where to start.
- Self-sterile — 'Mission' will not set a crop alone; it both needs and serves as a pollinator, so pair it with an overlapping variety like 'Nonpareil' within bee range.
- Frost at bloom — Though later-flowering than early almonds, hard late frosts can still injure blossoms. A sheltered, frost-draining site reduces losses.
- Brown rot and hull rot — Damp springs blight blossoms and twigs; hull rot strikes shoots in late summer. Sanitation, airflow, and careful irrigation/nitrogen timing at hull split manage both.
- Navel orangeworm — Larvae bore into splitting hulls and ruin kernels. Removing overwintering mummy nuts and harvesting promptly at hull split are key controls.
Propagation
Not true from seed. Propagated by budding or grafting onto peach, almond, or peach-almond hybrid rootstocks chosen for the site. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.
Toxicity to pets
Almond 'Mission' is toxic to pets. ASPCA classifies Prunus species as toxic to cats, dogs, and horses. The foliage, stems, and seeds contain cyanogenic glycosides (amygdalin) that release cyanide; signs include brick-red mucous membranes, dilated pupils, panting, and shock. Keep pets from prunings, wilted leaves, and fallen nuts. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).
Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.
Almond 'Mission' care — frequently asked questions
What is the common name for Prunus dulcis 'Mission'?
Prunus dulcis 'Mission' is most commonly called Almond 'Mission', but it is also known as Mission almond, Ne Plus Ultra almond. The names refer to the same species, so care instructions for Almond 'Mission' apply identically to anything sold as Mission almond.
How much light does almond 'mission' need?
Almond 'Mission' grows best in direct sun (at least 4-6 hours). Full sun, 8 or more hours, for heavy bloom and good kernel fill. It is unproductive and disease-prone in shade or cool, damp positions.
How often should I water almond 'mission'?
Water almond 'mission' deep watering every 7-10 days during the growing and nut-fill period; reduce near harvest. Provide steady moisture from bloom through kernel fill for size and quality; allow the surface to dry between soakings. Established trees handle dry spells but dislike wet feet. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is almond 'mission' toxic to cats and dogs?
Almond 'Mission' is toxic to pets. ASPCA classifies Prunus species as toxic to cats, dogs, and horses. The foliage, stems, and seeds contain cyanogenic glycosides (amygdalin) that release cyanide; signs include brick-red mucous membranes, dilated pupils, panting, and shock. Keep pets from prunings, wilted leaves, and fallen nuts.
What USDA hardiness zone does almond 'mission' grow in?
Almond 'Mission' is rated for USDA zone 6-9 (later bloom gives some frost edge) and RHS hardiness H4. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Almond 'Mission' deep-dive guides
Every aspect of almond 'mission' care, each with its own calibrated guide:
- Almond 'Mission' watering schedule
- Almond 'Mission' light requirements
- Best soil mix for almond 'mission'
- Almond 'Mission' fertilizing guide
- When to repot almond 'mission'
- How to propagate almond 'mission'
- Almond 'Mission' growth rate & size
- Almond 'Mission' cold hardiness
- Almond 'Mission' temperature & humidity
- Is almond 'mission' toxic to cats & dogs?
- Is almond 'mission' toxic to cats?
- Is almond 'mission' toxic to dogs?
Related guides
Almond 'Mission' is also commonly called Mission almond or Ne Plus Ultra almond.