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A Gardening Know How report used the large cacti visible outside Mandy Moore’s former Pasadena home to explore how gardeners can create a similar sculptural look. Landscape and property experts recommend choosing cacti for local hardiness and garden scale, with cold-tolerant prickly pear among the options for cooler climates.

Gardening Know How has published advice on recreating the sculptural cactus garden visible through the floor-to-ceiling windows of Mandy Moore’s former Pasadena home, with landscape and property experts saying that some varieties can grow in cooler regions if gardeners match plants to local conditions. The report’s central point is that a dramatic cactus display does not require a hot-climate garden, but species, drainage and scale matter.

The report identifies the plants at Moore’s home as likely Euphorbia ammak, rather than a confirmed identification, and says that species is generally suited to USDA hardiness zones 9b through 11b. It presents the garden as an example of using tall, architectural plants as a focal point visible from indoors. The report does not say that Moore or her representatives confirmed the plants’ species.

Marta Pawlik, co-founder and director of Laik, said cacti can make strong focal points because they have a distinctive form without relying on seasonal flowers. Landscape architect Noé Lerma of GreenMex similarly advised that gardeners do not need many plants to create an effective display. Both experts stressed choosing varieties according to the space and visual effect, rather than treating all cacti as interchangeable.

Pawlik suggested golden barrel cacti for smaller gardens, prickly pear for mid-sized spaces and blue columnar cacti for larger properties. The report says some golden barrels tolerate temperatures down to 20°F, while eastern prickly pear, Opuntia humifusa, is described as hardy to USDA zone 4. Those tolerances are variety-specific; gardeners should check the needs of a particular plant and their own site before buying.

At a glance
reportWhen: Published in the supplied Gardening Kno…
The developmentA Gardening Know How report has published expert advice on choosing and arranging statement cacti, including hardy varieties for gardens outside hot climates.

Cacti for Smaller and Cooler Gardens

The advice broadens the appeal of a style often associated with hot, dry landscapes: some gardeners in colder regions may be able to grow cactus outdoors by selecting cold-hardy species and providing suitable growing conditions. That is useful for people seeking a low-water, sculptural planting, but it is not a guarantee that any cactus will survive any winter.

Design choices also matter. Lerma cautioned against crowding large cacti, which can compete visually, and recommended allowing a specimen to stand out. The report proposes using one statement plant, a small number of softer companions and textured ground cover. It also highlights practical concerns, especially drainage and choosing a plant whose eventual size fits the garden.

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From Moore’s Garden to Plant Choices

The article began with the view from Moore’s Pasadena living room: floor-to-ceiling windows looking onto large cacti. Rather than offering a confirmed inventory of the garden, the report uses that image as inspiration and consults two professionals about translating its look to other properties. Its suggestions cover different scales, from grouped golden barrels to taller columnar forms such as Cereus peruvianus and blue myrtle cactus.

For planting combinations, Lerma named natal plum, purple ruellia, fountain grass and desert rose as possible companions for smaller species. Pawlik described pairing blue fescue with a columnar cactus and dark wood. The report also recommends crushed stone or gravel around plants as a visual ground cover that can support drainage, while emphasizing that a site’s actual soil and water conditions still need attention.

“Cacti serve as great focal points because they fill up the space they occupy without any effort. While most plants ask you to wait for blooms, growth, and seasons, cacti have presence from day one.”

— Marta Pawlik, co-founder and director of Laik

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Species and Site Conditions Matter

The report does not confirm which cactus species grow at Moore’s former home; it says the plants are likely Euphorbia ammak. It also does not provide a complete assessment of the garden’s soil, drainage, exposure or maintenance, so the image alone cannot show what conditions made that planting successful.

Cold tolerance varies by species and growing conditions. The report gives hardiness examples, but it does not establish that every plant sold under a common name will withstand the same temperatures or that a variety will thrive in every garden within a listed zone. Gardeners should verify the identification and care requirements of a specific plant with a knowledgeable nursery or local horticultural resource.

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Check Local Hardiness Before Planting

The practical next step for readers is to identify their USDA hardiness zone, then compare it with the documented tolerance of the exact cactus they plan to grow. They should also assess drainage, available space and the plant’s mature size before choosing a spot. For colder regions, the report points to hardy Opuntia varieties as candidates, while emphasizing the role of drainage.

The supplied report does not announce a follow-up, new planting project or confirmed update from Moore. Its advice is general guidance from the two cited experts; gardeners’ results will depend on local conditions and the variety selected.

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Key Questions

Did Mandy Moore confirm the cactus species in her garden?

No. The report says the plants are likely Euphorbia ammak; it does not cite confirmation from Moore or her representatives.

Can cacti grow outdoors in colder climates?

Some varieties can. The report cites eastern prickly pear (Opuntia humifusa) as hardy to USDA zone 4 and says drainage is important. Check the specific plant’s needs and your local conditions.

Which cacti work for a small garden?

Pawlik recommends golden barrel cacti for smaller gardens, where they can be grouped. Consider their mature size and spacing before planting.

How should statement cacti be arranged?

Lerma advises against placing too many large cacti close together. The report recommends letting a focal cactus stand out, with a few softer companions and textured ground cover.

Does gravel around a cactus guarantee good drainage?

No. The report suggests crushed stone or gravel as ground cover and notes drainage as a key consideration, but it does not claim that surface gravel alone will fix poorly drained soil. Check the site and the plant’s growing requirements.

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