瓜形大戟

瓜形大戟的基本資料

栽培難度

適合新手

壽命

多年生

體型

高度10cm以下、直徑5～10cm

澆水

施肥量可少（基肥中混入緩效有機肥料）

光照・放置位置

生長期的春至秋季，將其放置在避雨的陽光充足且通風良好的位置。為防止環境變化造成的日灼傷害，遮光約20～30%。

澆水

國內資料對其水性類型的定義不一，有夏型和春秋型兩種說法，春至秋為生長期。當用土完全乾燥時充分澆水，夜溫不降低的盛夏應延長澆水間隔。冬季休眠，應停止澆水。

溫度・越冬

具有一定的耐寒性，但需注意霜凍。冬季應在光線充足的室內或簡易溫室中管理。國內圖鑑以3～5℃作為耐寒目標。

用土・換盆

使用排水良好的用土，混入緩效有機肥料作為基肥。因直根較長，宜選用較深的盆器。

繁殖方法

因為是雌雄異株，獲得種子需要雄株和雌株。如產生子株可摘取進行扦插繁殖。

病蟲害・注意事項

受傷時流出的白色乳液會強烈刺激皮膚和眼睛。換盆時應戴手套，接觸後不應用手揉眼睛。

關於瓜形大戟

Euphorbia meloformis (melon spurge) is a perennial succulent with a ribbed, melon-shaped body striped in pale green and purple-brown. It stays within 10 cm in height and 5–10 cm across, and suits beginners. Learn its key traits and care basics.

開始照料瓜形大戟前需要了解的7件事

1. 1A bright, airy spot

   From spring to autumn, place it where it gets plenty of light and good airflow. Right after purchase or in strong summer sun, acclimate it gradually, for example behind a sheer curtain, to avoid sunburn on the body. Indoors, a windowsill works well as long as you ventilate the room from time to time.

2. 2Water only when dry

   Water thoroughly only after the soil has dried out completely, until water runs from the drainage hole. The round body already stores water, so overwatering is a common pitfall. Do not let water sit in the saucer.

3. 3Fast-draining soil

   Choose a mix that drains quickly. A succulent and cactus potting soil blended with gritty material such as pumice works well. Use a pot with a drainage hole and keep it modest in size to suit the small body.

4. 4When to repot

   Repotting is not needed every year. Do it at the start of the growing season, once the roots start to feel cramped in the pot. After repotting, wait a few days for any root damage to dry before watering.

5. 5Seasonal care

   It grows slowly but steadily from spring to autumn in a bright place. In winter its growth slows, so cut back watering sharply and keep it in a bright spot indoors, away from frost and cold drafts. Too much water in the cold months can lead to root rot.

6. 6Choosing a plant

   Look for a plump, firm body with no soft spots, dark patches or scars, and with clear striping. Check the photos and description on each listing to confirm the overall shape and condition.

7. 7Telling it from obesa

   The flower stalks that remain long after blooming are the key clue for telling meloformis from the look-alike Euphorbia obesa. A plant that has not flowered yet may not show them, so check the listing description as well.

瓜形大戟的常見問題

Q.Can a beginner grow it?

A.Yes, it is rated as beginner-friendly. Overwatering is the easiest way to go wrong, so water thoroughly only once the soil is dry and go easy in winter. In a bright, airy spot, this perennial can be enjoyed for many years.

Q.How big does it get?

A.It stays compact, at no more than 10 cm tall and 5–10 cm across. It does well in a small pot and fits easily on a windowsill or shelf.

Q.How is it different from obesa?

A.The main clue is that its flower stalks stay on the plant long after blooming. Because the two look so alike, they can be hard to distinguish when no stalks are present.

Q.Can I grow it indoors only?

A.Yes, if you can give it a bright windowsill and good airflow. Too little light can spoil its shape and dull its color, so choose the sunniest spot you have and turn the pot now and then.

Q.Is there anything to watch out for when handling it?

A.Plants in the Euphorbia group can release a white sap when damaged. Some people find it irritating to the skin, so wear gloves when repotting and rinse well with water if it touches you. Take care to keep it out of your eyes, and place the plant out of reach of small children and pets.

瓜形大戟栽培的實用工具

在圖鑑中詳細了解瓜形大戟

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