Aglaonema
A tough, slow-growing understory aroid genus from tropical Asia, prized for patterned foliage. Red and pink cultivars need noticeably more light than green ones to hold their color.
Red Aglaonema
Aglaonema commutatum hybrids (Red Gold / Siam Aurora group)
Botanical notes
Rhizomatous, cane-forming aroid; the red/pink pigment is anthocyanin, which fades in low light and intensifies with brighter, filtered sun.
Soil & moisture
Chunky, fast-draining aroid mix (bark, perlite, peat/coco coir). Never let it sit in standing water — the rhizome rots quickly. Slightly drier between waterings than a Philodendron.
Fertilizing
Balanced liquid fertilizer at quarter strength every 4 weeks in growing season (Mar–Oct); skip or halve in the driest, coolest months.
Common mistakes
- Keeping it too shaded — color fades to plain green
- Cold water or cold drafts causing translucent, mushy patches
- Overwatering the dense root mass, especially in low-light spots
Propagation
Divide offsets/rhizome sections at repot, ensuring each division has roots. Stem cuttings with a node also root readily in water or moist perlite.
CR note
Give it your brightest non-direct spot — east-facing windows work well. During heavy rain-season humidity, extend the dry-down window slightly to avoid rhizome rot.
Alocasia
Rhizomatous tropical aroids from Southeast Asian rainforest floors — dramatic foliage, high humidity needs, and a tendency toward dormancy or leaf drop when conditions dip below their comfort zone. Spider mites are the main pest to watch.
Alocasia Frydek (incl. "Lagar" form)
Alocasia micholitziana 'Frydek'
Botanical notes
Velvety, deep-green arrow-shaped leaves with striking white-green venation. "Lagar" is essentially the same cultivar sold under a nursery/regional name — care is identical.
Soil & moisture
Airy aroid mix with extra perlite/orchid bark for drainage. Consistency matters more than either extreme — avoid full dry-outs and avoid waterlogging equally.
Fertilizing
Quarter-to-half strength balanced fertilizer every 3–4 weeks spring through fall; pause if the plant shows any dormancy signs (see below).
Common mistakes
- Low humidity causing crispy leaf edges
- Panicking at natural dormancy — a leaf or two dying back while a new one emerges is normal
- Direct sun bleaching the velvet leaves
Propagation
Divide rhizome offsets/pups at the base during repotting, keeping roots intact on each division. Avoid leaf cuttings — Alocasia won't propagate from a leaf alone.
CR note
Ambient humidity indoors is usually enough without extra misting; the bigger threat is air-conditioned rooms drying it out — group with other humidity lovers away from AC vents.
Variegated Alocasia "Hilo Beauty"
Alocasia 'Hilo Beauty'
Botanical notes
Compact grower with cream-and-green marbled, ruffled leaves. Naturally has smaller, less vigorous growth than solid-colored relatives due to reduced chlorophyll in the pale sections.
Soil & moisture
Very well-draining chunky mix — variegated sections are more prone to rot-related stress if the soil stays wet too long.
Fertilizing
Light feeding, quarter strength monthly in growing season — variegated tissue can burn more easily than green tissue.
Common mistakes
- Expecting the same growth speed as a full-green Alocasia
- Fertilizing at full strength and scorching pale leaf sections
- Letting humidity drop below 50% — leaf edges brown fast
Propagation
Rhizome division only, at repot. Choose divisions with a healthy amount of green tissue for reliable establishment.
CR note
A covered, bright patio spot with dappled light is ideal for the growing season; bring indoors if nighttime temps drop unusually low in higher-elevation areas.
Alocasia Polly
Alocasia × amazonica 'Polly'
Botanical notes
A hybrid known for glossy, arrow-shaped leaves with pale green veins and wavy white-edged margins. Often the "starter" Alocasia for new growers — slightly more forgiving than Frydek.
Soil & moisture
Chunky aroid mix; likes to dry slightly at the surface but never fully. Terracotta pots help regulate moisture in humid climates.
Fertilizing
Quarter strength every 3–4 weeks in active growth; withhold entirely once dormancy signs appear.
Common mistakes
- Treating seasonal dieback as plant failure and overwatering to "fix" it
- Spider mites from air that's too dry — inspect leaf undersides regularly
- Cold shock from AC or night drafts
Propagation
Divide corm/rhizome offsets at the base; each division needs at least one growth point and some roots.
CR note
Reliable year-round grower in typical CR indoor warmth; watch for mite pressure in drier Guanacaste-type microclimates specifically.
Variegated Elephant Ear
Alocasia macrorrhizos 'Variegata'
Botanical notes
A large-growing species with heavily marbled cream-and-green leaves that can reach substantial size given room and light — the largest-growing Alocasia in this collection.
Soil & moisture
Rich but fast-draining mix; as a bigger, more vigorous grower it can handle slightly more consistent moisture than compact Alocasia cultivars.
Fertilizing
Half strength balanced fertilizer every 3 weeks in active growth given its size and vigor; reduce in cooler/drier months.
Common mistakes
- Underestimating eventual size and under-potting
- Too little light causing loss of variegation and leggy growth
- Letting it dry out completely, which stresses this species more than others
Propagation
Rhizome/offset division at repot; large enough specimens can also be propagated from sizeable rhizome sections with an eye.
CR note
A strong candidate for a bright, covered outdoor patio spot in Costa Rica's climate — it can take more sun and humidity outdoors than most of its Alocasia relatives.
Beaucarnea
Not a true palm — a caudex-forming succulent from semi-arid Mexico. The polar opposite of the Alocasia above: full sun, minimal water, and near indestructibility.
Ponytail Palm
Beaucarnea recurvata
Botanical notes
The swollen base (caudex) stores water, allowing long drought tolerance. Slow-growing, with a cascade of strappy leaves from the top of the stem.
Soil & moisture
Cactus/succulent mix with sharp drainage — the single biggest killer of this plant is a mix that holds moisture around the caudex.
Fertilizing
Light feeding 2–3 times during the growing season with a diluted balanced or cactus fertilizer; it needs very little.
Common mistakes
- Watering on a fixed schedule instead of by soil dryness
- Using regular potting soil instead of a gritty, fast-draining mix
- Too little light causing thin, floppy, pale leaves
Propagation
Occasionally produces basal offsets/pups that can be removed with some root and potted separately once large enough. Seed propagation is slow and less practical at home.
CR note
Perfect for the sunniest, driest spot in the house or a bright patio — one of the few plants on this list that actively benefits from CR's intense midday sun.
Caladium
Tuberous aroids grown for paper-thin, vividly patterned leaves. Distinctive trait: they naturally go dormant, dying back to the tuber, and this is normal — not a care failure.
Caladium bicolor 'White Queen'
Caladium bicolor 'White Queen'
Botanical notes
Pale, near-white leaves with deep green veining, arising from an underground tuber. Growth is seasonal — active flush of leaves, then natural dieback.
Soil & moisture
Rich, well-draining mix. Keep consistently moist while leaves are actively growing; once leaves yellow and collapse at season's end, cut back watering drastically.
Fertilizing
Balanced liquid fertilizer at quarter strength every 3–4 weeks only while actively leafing out; none during dormancy.
Common mistakes
- Discarding the plant when it dies back, not realizing the tuber is still alive
- Continuing to water heavily through dormancy, rotting the tuber
- Too little humidity causing the delicate leaves to crisp at the edges
Propagation
Divide tubers (each with at least one visible "eye") during the dormant period and replant to start the next growth cycle.
CR note
In Costa Rica's stable warm climate, dormancy can be shorter or less pronounced than in temperate growing guides — let the plant's own leaf behavior guide watering rather than a strict calendar.
Caladium bicolor 'Bombshell'
Caladium bicolor 'Bombshell'
Botanical notes
A compact, ruffled-leaf cultivar in fiery red tones, smaller and more densely leaved than many Caladium — good for tighter spaces. Same tuberous, dormancy-driven lifecycle as 'White Queen'.
Soil & moisture
Same profile as 'White Queen': rich, moisture-retentive but well-draining mix during growth, kept nearly dry during dormancy.
Fertilizing
Quarter strength balanced fertilizer every 3–4 weeks in active growth; stop feeding as leaves begin to decline naturally.
Common mistakes
- Assuming a dying-back plant needs more water, not less
- Direct hot sun scorching the compact ruffled leaves
- Repotting or disturbing the tuber while it's dormant
Propagation
Tuber division at the start of dormancy or just before new growth resumes, same method as other Caladium.
CR note
Its compact size makes it well suited to a bright windowsill indoors, sidestepping the intense direct sun found on unshaded CR patios.
Callisia
A fast, easy trailing succulent-leaning genus related to Tradescantia — forgiving and quick to root from cuttings.
Turtle Vine
Callisia repens
Botanical notes
Trailing, semi-succulent stems with small rounded leaves that can blush purple-pink under strong light — a good hanging basket or shelf trailer.
Soil & moisture
Standard well-draining potting mix; more forgiving of both under- and over-watering than most plants on this list, but avoid prolonged soggy soil.
Fertilizing
Light balanced feeding monthly during growing season; it grows quickly enough to benefit from regular light feeding.
Common mistakes
- Leggy, sparse growth from too little light
- Letting cuttings get too long without pinching, leading to a thin, straggly plant
- Root rot from pots without drainage holes
Propagation
Extremely easy — stem cuttings root in water or directly in moist soil within one to two weeks. Great candidate for filling out a sparse pot quickly.
CR note
Does well on a bright, part-sun patio shelf; the brighter the light, the more pronounced its purple blush.
Chamaedorea
A true understory palm genus, several species native to Central America — genuinely one of the best-suited plants on this list for the region.
Parlor Palm
Chamaedorea elegans
Botanical notes
A slow-growing, clumping understory palm native to Mexico and Central America, naturally adapted to low, filtered rainforest-floor light.
Soil & moisture
Well-draining, slightly moisture-retentive potting mix. Sensitive to both prolonged dryness and waterlogging — aim for steady, moderate moisture.
Fertilizing
Light balanced fertilizer at quarter strength every 4–6 weeks in growing season; palms are prone to nutrient burn, so under-fertilizing is safer than over-doing it.
Common mistakes
- Overwatering, especially in low-light spots where the soil stays wet longer
- Fertilizer burn from over-application, seen as brown leaflet tips
- Tap water fluoride/salt buildup causing tip browning over time — filtered or rain water helps
Propagation
Division of naturally clumping offshoots at the base, each with its own roots. Seed propagation is possible but slow and less practical at home.
CR note
Genuinely native to the region's forests — one of the easiest, most climate-appropriate plants on this list. Rainwater collected locally is an excellent watering source for it.
Colocasia
Often confused with Alocasia, but Colocasia leaves point downward from the petiole (Alocasia points up) and this genus tolerates — even enjoys — much wetter soil, including boggy or pond-edge conditions.
Black Magic Elephant Ear
Colocasia esculenta 'Black Magic'
Botanical notes
Large, heart-shaped near-black leaves on a vigorous tuberous plant; the true taro genus, historically grown as a food crop, so it's built for wet feet.
Soil & moisture
Rich, moisture-retentive soil — unlike most aroids here, this one tolerates poor drainage and can even be grown at a pond's edge. Indoors, a saucer that holds a little water is fine.
Fertilizing
Half strength balanced fertilizer every 3 weeks during active growth given its vigorous size and appetite; reduce as growth slows.
Common mistakes
- Treating it like Alocasia and underwatering — the opposite mistake causes stress here
- Too little light, muting the deep black-purple leaf color to green
- Underestimating final size indoors — it wants to get big
Propagation
Divide the cormlets/offsets that form around the base of the main tuber; each division needs roots and a growing point.
CR note
An excellent outdoor candidate in Costa Rica — happy in a large pot on a rainy, bright patio where it can catch natural rainfall without you worrying about overwatering.