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Posted 1Y ago by @Goodchicken

Is this color change healthy?

My #SweetPotatoVine is a cutting taken from an outdoor plant. Itโ€™s very well rooted and gives new leaves. Currently itโ€™s under an LED 1500 w lamp. I see the leaves turning a purple color and while I do love how it looks I was wondering why itโ€™s happening and if itโ€™s an indication that is wonโ€™t thrive as an indoor plant. #PlantAddict #HappyPlants #PlantsMakePeopleHappy
5โ€ pot with drainage
Last watered 1 year ago
The leaves donโ€™t seem burnt
@Goodchicken

Purpling of leaves can have a variety of causes, but the most common one is a deficiency in phosphorus. Phosphorus is a nutrient essential for plant growth that is particularly important for rooting, flowering, and fruiting.

If phosphorus is deficient โ€“ or if conditions make it difficult for plants to absorb the phosphorus thatโ€™s there โ€“ plants will stop, or severely restrict, growth. The older leaves start turning a dull, dark green, which then turns to purple. The โ€œpurplingโ€ begins at the tips or undersides of the leaves, and moves its way across the entire leaf.

In most cases, phosphorus deficiency isnโ€™t actually caused by a lack of phosphorus in the soil, but by some other problem that keeps the plants from absorbing nutrients properly. Adding phosphorus wonโ€™t help, and high phosphorus chemical fertilizers are very polluting.

Do a soil Test: A soil test will tell you the usable phosphorus levels, as well as other conditions that can affect phosphorus absorption. If your soil test does indicate low phosphorus levels, you can gently raise them using rock phosphate, bone meal, superphosphate, manure, or compost.

Consider the Weather: Cold, wet soil can keep plant roots from absorbing phosphorus properly. Signs of phosphorus deficiency are frequently seen in early spring, if plants are set out a little too early. If cold is the culprit, the plants may recover when things warm up.

Check soil pH: Highly acidic soil can also affect phosphorus uptake.

Look at Iron Levels: soils high in iron can bind up phosphorus in a way thatโ€™s difficult for plants to absorb.
Pretty certain this is natural with sweet potato vines! Beautiful purple colours are common ๐Ÿ˜
I use to work on a farm. I use to set out the potato vines and dig the potatoes in November. That sweet potato plants were always a dark green. I have never in 40 years of life seen a high yellow potato vine until I got one.